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TheLangSmith Java SDK provides convenient access to the LangSmithREST API from applications written in Java.
To learn more about LangSmith, check out thedocs.
The REST API documentation can be found ondocs.smith.langchain.com. Javadocs are available onjavadoc.io.
implementation("com.langchain.smith:langsmith-java:0.1.0-alpha.19")<dependency> <groupId>com.langchain.smith</groupId> <artifactId>langsmith-java</artifactId> <version>0.1.0-alpha.19</version></dependency>
This library requires Java 8 or later.
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;importcom.langchain.smith.models.runs.RunQueryParams;// Configures using the `langchain.langsmithApiKey`, `langchain.langsmithTenantId`, `langchain.langsmithBearerToken`, `langchain.langsmithOrganizationId` and `langchain.baseUrl` system properties// Or configures using the `LANGSMITH_API_KEY`, `LANGSMITH_TENANT_ID`, `LANGSMITH_BEARER_TOKEN`, `LANGSMITH_ORGANIZATION_ID` and `LANGSMITH_ENDPOINT` environment variablesLangsmithClientclient =LangsmithOkHttpClient.fromEnv();RunQueryParamsparams =RunQueryParams.builder() .addSession("1ffaeba7-541e-469f-bae7-df3208ea3d45") .limit(10L) .build();varresponse =client.runs().query(params);// Print runsSystem.out.println("Found " +response.runs().size() +" runs:");for (varrun :response.runs()) {System.out.println("Run ID: " +run.id());System.out.println("Run Name: " +run.name());System.out.println("---");}
This repository includes runnable examples in thelangsmith-java-example module to help you get started.
Examples can be run using Gradle:
# Set required environment variablesexport LANGSMITH_API_KEY="your-api-key"export LANGSMITH_ENDPOINT="https://api.smith.langchain.com"# Run a specific example./gradlew :langsmith-java-example:run -Pexample=ListRuns
export LANGSMITH_PROJECT_ID="your-project-id"./gradlew :langsmith-java-example:run -Pexample=ListRuns
All examples are available inlangsmith-java-example.
Configure the client using system properties or environment variables:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;// Configures using the `langchain.langsmithApiKey`, `langchain.langsmithTenantId`, `langchain.langsmithBearerToken`, `langchain.langsmithOrganizationId` and `langchain.baseUrl` system properties// Or configures using the `LANGSMITH_API_KEY`, `LANGSMITH_TENANT_ID`, `LANGSMITH_BEARER_TOKEN`, `LANGSMITH_ORGANIZATION_ID` and `LANGSMITH_ENDPOINT` environment variablesLangsmithClientclient =LangsmithOkHttpClient.fromEnv();
Or manually:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;LangsmithClientclient =LangsmithOkHttpClient.builder() .apiKey("My API Key") .tenantId("My Tenant ID") .organizationId("My Organization ID") .build();
Or using a combination of the two approaches:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;LangsmithClientclient =LangsmithOkHttpClient.builder()// Configures using the `langchain.langsmithApiKey`, `langchain.langsmithTenantId`, `langchain.langsmithBearerToken`, `langchain.langsmithOrganizationId` and `langchain.baseUrl` system properties// Or configures using the `LANGSMITH_API_KEY`, `LANGSMITH_TENANT_ID`, `LANGSMITH_BEARER_TOKEN`, `LANGSMITH_ORGANIZATION_ID` and `LANGSMITH_ENDPOINT` environment variables .fromEnv() .apiKey("My API Key") .build();
See this table for the available options:
| Setter | System property | Environment variable | Required | Default value |
|---|---|---|---|---|
apiKey | langchain.langsmithApiKey | LANGSMITH_API_KEY | false | - |
tenantId | langchain.langsmithTenantId | LANGSMITH_TENANT_ID | false | - |
bearerToken | langchain.langsmithBearerToken | LANGSMITH_BEARER_TOKEN | false | - |
organizationId | langchain.langsmithOrganizationId | LANGSMITH_ORGANIZATION_ID | false | - |
baseUrl | langchain.baseUrl | LANGSMITH_ENDPOINT | true | "https://api.smith.langchain.com/" |
System properties take precedence over environment variables.
Tip
Don't create more than one client in the same application. Each client has a connection pool andthread pools, which are more efficient to share between requests.
To temporarily use a modified client configuration, while reusing the same connection and thread pools, callwithOptions() on any client or service:
importcom.langchain.smith.client.LangsmithClient;LangsmithClientclientWithOptions =client.withOptions(optionsBuilder -> {optionsBuilder.baseUrl("https://example.com");optionsBuilder.maxRetries(42);});
ThewithOptions() method does not affect the original client or service.
To send a request to the LangChain API, build an instance of someParams class and pass it to the corresponding client method. When the response is received, it will be deserialized into an instance of a Java class.
For example,client.sessions().dashboard(...) should be called with an instance ofSessionDashboardParams, and it will return an instance ofCustomChartsSection.
Each class in the SDK has an associatedbuilder or factory method for constructing it.
Each class isimmutable once constructed. If the class has an associated builder, then it has atoBuilder() method, which can be used to convert it back to a builder for making a modified copy.
Because each class is immutable, builder modification willnever affect already built class instances.
The default client is synchronous. To switch to asynchronous execution, call theasync() method:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;importcom.langchain.smith.models.sessions.CustomChartsSection;importcom.langchain.smith.models.sessions.CustomChartsSectionRequest;importcom.langchain.smith.models.sessions.SessionDashboardParams;importjava.util.concurrent.CompletableFuture;// Configures using the `langchain.langsmithApiKey`, `langchain.langsmithTenantId`, `langchain.langsmithBearerToken`, `langchain.langsmithOrganizationId` and `langchain.baseUrl` system properties// Or configures using the `LANGSMITH_API_KEY`, `LANGSMITH_TENANT_ID`, `LANGSMITH_BEARER_TOKEN`, `LANGSMITH_ORGANIZATION_ID` and `LANGSMITH_ENDPOINT` environment variablesLangsmithClientclient =LangsmithOkHttpClient.fromEnv();SessionDashboardParamsparams =SessionDashboardParams.builder() .sessionId("1ffaeba7-541e-469f-bae7-df3208ea3d45") .customChartsSectionRequest(CustomChartsSectionRequest.builder().build()) .build();CompletableFuture<CustomChartsSection>customChartsSection =client.async().sessions().dashboard(params);
Or create an asynchronous client from the beginning:
importcom.langchain.smith.client.LangsmithClientAsync;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClientAsync;importcom.langchain.smith.models.sessions.CustomChartsSection;importcom.langchain.smith.models.sessions.CustomChartsSectionRequest;importcom.langchain.smith.models.sessions.SessionDashboardParams;importjava.util.concurrent.CompletableFuture;// Configures using the `langchain.langsmithApiKey`, `langchain.langsmithTenantId`, `langchain.langsmithBearerToken`, `langchain.langsmithOrganizationId` and `langchain.baseUrl` system properties// Or configures using the `LANGSMITH_API_KEY`, `LANGSMITH_TENANT_ID`, `LANGSMITH_BEARER_TOKEN`, `LANGSMITH_ORGANIZATION_ID` and `LANGSMITH_ENDPOINT` environment variablesLangsmithClientAsyncclient =LangsmithOkHttpClientAsync.fromEnv();SessionDashboardParamsparams =SessionDashboardParams.builder() .sessionId("1ffaeba7-541e-469f-bae7-df3208ea3d45") .customChartsSectionRequest(CustomChartsSectionRequest.builder().build()) .build();CompletableFuture<CustomChartsSection>customChartsSection =client.sessions().dashboard(params);
The asynchronous client supports the same options as the synchronous one, except most methods returnCompletableFutures.
The SDK defines methods that accept files.
To upload a file, pass aPath:
importcom.langchain.smith.models.examples.Example;importcom.langchain.smith.models.examples.ExampleUploadFromCsvParams;importjava.nio.file.Paths;ExampleUploadFromCsvParamsparams =ExampleUploadFromCsvParams.builder() .datasetId("182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e") .addInputKey("string") .file(Paths.get("/path/to/file")) .build();List<Example>examples =client.examples().uploadFromCsv(params);
Or an arbitraryInputStream:
importcom.langchain.smith.models.examples.Example;importcom.langchain.smith.models.examples.ExampleUploadFromCsvParams;importjava.net.URL;ExampleUploadFromCsvParamsparams =ExampleUploadFromCsvParams.builder() .datasetId("182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e") .addInputKey("string") .file(newURL("https://example.com//path/to/file").openStream()) .build();List<Example>examples =client.examples().uploadFromCsv(params);
Or abyte[] array:
importcom.langchain.smith.models.examples.Example;importcom.langchain.smith.models.examples.ExampleUploadFromCsvParams;ExampleUploadFromCsvParamsparams =ExampleUploadFromCsvParams.builder() .datasetId("182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e") .addInputKey("string") .file("content".getBytes()) .build();List<Example>examples =client.examples().uploadFromCsv(params);
Note that when passing a non-Path its filename is unknown so it will not be included in the request. To manually set a filename, pass aMultipartField:
importcom.langchain.smith.core.MultipartField;importcom.langchain.smith.models.examples.Example;importcom.langchain.smith.models.examples.ExampleUploadFromCsvParams;importjava.io.InputStream;importjava.net.URL;ExampleUploadFromCsvParamsparams =ExampleUploadFromCsvParams.builder() .datasetId("182bd5e5-6e1a-4fe4-a799-aa6d9a6ab26e") .addInputKey("string") .file(MultipartField.<InputStream>builder() .value(newURL("https://example.com//path/to/file").openStream()) .filename("/path/to/file") .build()) .build();List<Example>examples =client.examples().uploadFromCsv(params);
The SDK defines methods that deserialize responses into instances of Java classes. However, these methods don't provide access to the response headers, status code, or the raw response body.
To access this data, prefix any HTTP method call on a client or service withwithRawResponse():
importcom.langchain.smith.core.http.Headers;importcom.langchain.smith.core.http.HttpResponseFor;importcom.langchain.smith.models.sessions.CustomChartsSection;importcom.langchain.smith.models.sessions.CustomChartsSectionRequest;importcom.langchain.smith.models.sessions.SessionDashboardParams;SessionDashboardParamsparams =SessionDashboardParams.builder() .sessionId("1ffaeba7-541e-469f-bae7-df3208ea3d45") .customChartsSectionRequest(CustomChartsSectionRequest.builder().build()) .build();HttpResponseFor<CustomChartsSection>customChartsSection =client.sessions().withRawResponse().dashboard(params);intstatusCode =customChartsSection.statusCode();Headersheaders =customChartsSection.headers();
You can still deserialize the response into an instance of a Java class if needed:
importcom.langchain.smith.models.sessions.CustomChartsSection;CustomChartsSectionparsedCustomChartsSection =customChartsSection.parse();
The SDK throws custom unchecked exception types:
LangChainServiceException: Base class for HTTP errors. See this table for which exception subclass is thrown for each HTTP status code:LangChainIoException: I/O networking errors.LangChainRetryableException: Generic error indicating a failure that could be retried by the client.LangChainInvalidDataException: Failure to interpret successfully parsed data. For example, when accessing a property that's supposed to be required, but the API unexpectedly omitted it from the response.LangChainException: Base class for all exceptions. Most errors will result in one of the previously mentioned ones, but completely generic errors may be thrown using the base class.
The SDK defines methods that return a paginated lists of results. It provides convenient ways to access the results either one page at a time or item-by-item across all pages.
To iterate through all results across all pages, use theautoPager() method, which automatically fetches more pages as needed.
When using the synchronous client, the method returns anIterable
importcom.langchain.smith.models.datasets.Dataset;importcom.langchain.smith.models.datasets.DatasetListPage;DatasetListPagepage =client.datasets().list();// Process as an Iterablefor (Datasetdataset :page.autoPager()) {System.out.println(dataset);}// Process as a Streampage.autoPager() .stream() .limit(50) .forEach(dataset ->System.out.println(dataset));
When using the asynchronous client, the method returns anAsyncStreamResponse:
importcom.langchain.smith.core.http.AsyncStreamResponse;importcom.langchain.smith.models.datasets.Dataset;importcom.langchain.smith.models.datasets.DatasetListPageAsync;importjava.util.Optional;importjava.util.concurrent.CompletableFuture;CompletableFuture<DatasetListPageAsync>pageFuture =client.async().datasets().list();pageFuture.thenRun(page ->page.autoPager().subscribe(dataset -> {System.out.println(dataset);}));// If you need to handle errors or completion of the streampageFuture.thenRun(page ->page.autoPager().subscribe(newAsyncStreamResponse.Handler<>() {@OverridepublicvoidonNext(Datasetdataset) {System.out.println(dataset); }@OverridepublicvoidonComplete(Optional<Throwable>error) {if (error.isPresent()) {System.out.println("Something went wrong!");thrownewRuntimeException(error.get()); }else {System.out.println("No more!"); } }}));// Or use futurespageFuture.thenRun(page ->page.autoPager() .subscribe(dataset -> {System.out.println(dataset); }) .onCompleteFuture() .whenComplete((unused,error) -> {if (error !=null) {System.out.println("Something went wrong!");thrownewRuntimeException(error); }else {System.out.println("No more!"); } }));
To access individual page items and manually request the next page, use theitems(),hasNextPage(), andnextPage() methods:
importcom.langchain.smith.models.datasets.Dataset;importcom.langchain.smith.models.datasets.DatasetListPage;DatasetListPagepage =client.datasets().list();while (true) {for (Datasetdataset :page.items()) {System.out.println(dataset); }if (!page.hasNextPage()) {break; }page =page.nextPage();}
The SDK uses the standardOkHttp logging interceptor.
Enable logging by setting theLANGCHAIN_LOG environment variable toinfo:
export LANGCHAIN_LOG=infoOr todebug for more verbose logging:
export LANGCHAIN_LOG=debugAlthough the SDK uses reflection, it is still usable withProGuard andR8 becauselangsmith-java-core is published with aconfiguration file containingkeep rules.
ProGuard and R8 should automatically detect and use the published rules, but you can also manually copy the keep rules if necessary.
The SDK depends onJackson for JSON serialization/deserialization. It is compatible with version 2.13.4 or higher, but depends on version 2.18.2 by default.
The SDK throws an exception if it detects an incompatible Jackson version at runtime (e.g. if the default version was overridden in your Maven or Gradle config).
If the SDK threw an exception, but you'recertain the version is compatible, then disable the version check using thecheckJacksonVersionCompatibility onLangsmithOkHttpClient orLangsmithOkHttpClientAsync.
Caution
We make no guarantee that the SDK works correctly when the Jackson version check is disabled.
The SDK automatically retries 2 times by default, with a short exponential backoff between requests.
Only the following error types are retried:
- Connection errors (for example, due to a network connectivity problem)
- 408 Request Timeout
- 409 Conflict
- 429 Rate Limit
- 5xx Internal
The API may also explicitly instruct the SDK to retry or not retry a request.
To set a custom number of retries, configure the client using themaxRetries method:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;LangsmithClientclient =LangsmithOkHttpClient.builder() .fromEnv() .maxRetries(4) .build();
Requests time out after 90 seconds by default.
To set a custom timeout, configure the method call using thetimeout method:
importcom.langchain.smith.models.sessions.CustomChartsSection;CustomChartsSectioncustomChartsSection =client.sessions().dashboard(params,RequestOptions.builder().timeout(Duration.ofSeconds(30)).build());
Or configure the default for all method calls at the client level:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;importjava.time.Duration;LangsmithClientclient =LangsmithOkHttpClient.builder() .fromEnv() .timeout(Duration.ofSeconds(30)) .build();
To route requests through a proxy, configure the client using theproxy method:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;importjava.net.InetSocketAddress;importjava.net.Proxy;LangsmithClientclient =LangsmithOkHttpClient.builder() .fromEnv() .proxy(newProxy(Proxy.Type.HTTP,newInetSocketAddress("https://example.com",8080 ) )) .build();
Note
Most applications should not call these methods, and instead use the system defaults. The defaults includespecial optimizations that can be lost if the implementations are modified.
To configure how HTTPS connections are secured, configure the client using thesslSocketFactory,trustManager, andhostnameVerifier methods:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;LangsmithClientclient =LangsmithOkHttpClient.builder() .fromEnv()// If `sslSocketFactory` is set, then `trustManager` must be set, and vice versa. .sslSocketFactory(yourSSLSocketFactory) .trustManager(yourTrustManager) .hostnameVerifier(yourHostnameVerifier) .build();
The SDK consists of three artifacts:
langsmith-java-core- Contains core SDK logic
- Does not depend onOkHttp
- Exposes
LangsmithClient,LangsmithClientAsync,LangsmithClientImpl, andLangsmithClientAsyncImpl, all of which can work with any HTTP client
langsmith-java-client-okhttp- Depends onOkHttp
- Exposes
LangsmithOkHttpClientandLangsmithOkHttpClientAsync, which provide a way to constructLangsmithClientImplandLangsmithClientAsyncImpl, respectively, using OkHttp
langsmith-java- Depends on and exposes the APIs of both
langsmith-java-coreandlangsmith-java-client-okhttp - Does not have its own logic
- Depends on and exposes the APIs of both
This structure allows replacing the SDK's default HTTP client without pulling in unnecessary dependencies.
CustomizedOkHttpClient
Tip
Try the availablenetwork options before replacing the default client.
To use a customizedOkHttpClient:
- Replace your
langsmith-javadependency withlangsmith-java-core - Copy
langsmith-java-client-okhttp'sOkHttpClientclass into your code and customize it - Construct
LangsmithClientImplorLangsmithClientAsyncImpl, similarly toLangsmithOkHttpClientorLangsmithOkHttpClientAsync, using your customized client
To use a completely custom HTTP client:
- Replace your
langsmith-javadependency withlangsmith-java-core - Write a class that implements the
HttpClientinterface - Construct
LangsmithClientImplorLangsmithClientAsyncImpl, similarly toLangsmithOkHttpClientorLangsmithOkHttpClientAsync, using your new client class
The SDK is typed for convenient usage of the documented API. However, it also supports working with undocumented or not yet supported parts of the API.
To set undocumented parameters, call theputAdditionalHeader,putAdditionalQueryParam, orputAdditionalBodyProperty methods on anyParams class:
importcom.langchain.smith.core.JsonValue;importcom.langchain.smith.models.sessions.SessionDashboardParams;SessionDashboardParamsparams =SessionDashboardParams.builder() .putAdditionalHeader("Secret-Header","42") .putAdditionalQueryParam("secret_query_param","42") .putAdditionalBodyProperty("secretProperty",JsonValue.from("42")) .build();
These can be accessed on the built object later using the_additionalHeaders(),_additionalQueryParams(), and_additionalBodyProperties() methods.
To set a documented parameter or property to an undocumented or not yet supportedvalue, pass aJsonValue object to its setter:
importcom.langchain.smith.models.sessions.CustomChartsSectionRequest;importcom.langchain.smith.models.sessions.SessionDashboardParams;SessionDashboardParamsparams =SessionDashboardParams.builder() .customChartsSectionRequest(CustomChartsSectionRequest.builder().build()) .build();
The most straightforward way to create aJsonValue is using itsfrom(...) method:
importcom.langchain.smith.core.JsonValue;importjava.util.List;importjava.util.Map;// Create primitive JSON valuesJsonValuenullValue =JsonValue.from(null);JsonValuebooleanValue =JsonValue.from(true);JsonValuenumberValue =JsonValue.from(42);JsonValuestringValue =JsonValue.from("Hello World!");// Create a JSON array value equivalent to `["Hello", "World"]`JsonValuearrayValue =JsonValue.from(List.of("Hello","World"));// Create a JSON object value equivalent to `{ "a": 1, "b": 2 }`JsonValueobjectValue =JsonValue.from(Map.of("a",1,"b",2));// Create an arbitrarily nested JSON equivalent to:// {// "a": [1, 2],// "b": [3, 4]// }JsonValuecomplexValue =JsonValue.from(Map.of("a",List.of(1,2 ),"b",List.of(3,4 )));
Normally aBuilder class'sbuild method will throwIllegalStateException if any required parameter or property is unset.
To forcibly omit a required parameter or property, passJsonMissing:
importcom.langchain.smith.core.JsonMissing;importcom.langchain.smith.models.sessions.CustomChartsSectionRequest;importcom.langchain.smith.models.sessions.SessionDashboardParams;SessionDashboardParamsparams =SessionDashboardParams.builder() .customChartsSectionRequest(CustomChartsSectionRequest.builder().build()) .sessionId(JsonMissing.of()) .build();
To access undocumented response properties, call the_additionalProperties() method:
importcom.langchain.smith.core.JsonValue;importjava.util.Map;Map<String,JsonValue>additionalProperties =client.sessions().dashboard(params)._additionalProperties();JsonValuesecretPropertyValue =additionalProperties.get("secretProperty");Stringresult =secretPropertyValue.accept(newJsonValue.Visitor<>() {@OverridepublicStringvisitNull() {return"It's null!"; }@OverridepublicStringvisitBoolean(booleanvalue) {return"It's a boolean!"; }@OverridepublicStringvisitNumber(Numbervalue) {return"It's a number!"; }// Other methods include `visitMissing`, `visitString`, `visitArray`, and `visitObject`// The default implementation of each unimplemented method delegates to `visitDefault`, which throws by default, but can also be overridden});
To access a property's raw JSON value, which may be undocumented, call its_ prefixed method:
importcom.langchain.smith.core.JsonField;importjava.util.Optional;JsonField<Object>field =client.sessions().dashboard(params)._field();if (field.isMissing()) {// The property is absent from the JSON response}elseif (field.isNull()) {// The property was set to literal null}else {// Check if value was provided as a string// Other methods include `asNumber()`, `asBoolean()`, etc.Optional<String>jsonString =field.asString();// Try to deserialize into a custom typeMyClassmyObject =field.asUnknown().orElseThrow().convert(MyClass.class);}
In rare cases, the API may return a response that doesn't match the expected type. For example, the SDK may expect a property to contain aString, but the API could return something else.
By default, the SDK will not throw an exception in this case. It will throwLangChainInvalidDataException only if you directly access the property.
If you would prefer to check that the response is completely well-typed upfront, then either callvalidate():
importcom.langchain.smith.models.sessions.CustomChartsSection;CustomChartsSectioncustomChartsSection =client.sessions().dashboard(params).validate();
Or configure the method call to validate the response using theresponseValidation method:
importcom.langchain.smith.models.sessions.CustomChartsSection;CustomChartsSectioncustomChartsSection =client.sessions().dashboard(params,RequestOptions.builder().responseValidation(true).build());
Or configure the default for all method calls at the client level:
importcom.langchain.smith.client.LangsmithClient;importcom.langchain.smith.client.okhttp.LangsmithOkHttpClient;LangsmithClientclient =LangsmithOkHttpClient.builder() .fromEnv() .responseValidation(true) .build();
Javaenum classes are not triviallyforwards compatible. Using them in the SDK could cause runtime exceptions if the API is updated to respond with a new enum value.
UsingJsonField<T> enables a few features:
- Allowing usage ofundocumented API functionality
- Lazilyvalidating the API response against the expected shape
- Representing absent vs explicitly null values
Why don't you usedata classes?
It is notbackwards compatible to add new fields to a data class and we don't want to introduce a breaking change every time we add a field to a class.
Checked exceptions are widely considered a mistake in the Java programming language. In fact, they were omitted from Kotlin for this reason.
Checked exceptions:
- Are verbose to handle
- Encourage error handling at the wrong level of abstraction, where nothing can be done about the error
- Are tedious to propagate due to thefunction coloring problem
- Don't play well with lambdas (also due to the function coloring problem)
This package generally followsSemVer conventions, though certain backwards-incompatible changes may be released as minor versions:
- Changes to library internals which are technically public but not intended or documented for external use.(Please open a GitHub issue to let us know if you are relying on such internals.)
- Changes that we do not expect to impact the vast majority of users in practice.
We take backwards-compatibility seriously and work hard to ensure you can rely on a smooth upgrade experience.
We are keen for your feedback; please open anissue with questions, bugs, or suggestions.
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