Sourced fromgithub.com/hashicorp/go-cty's changelog.

1.4.1 (March 5, 2025)

• function/stdlib: Fix various panics related to sets with unknown element types in the set-manipulation functions. (#52)
• json: Removejson.UnmarshalDynamicWithImpliedType function that was only available in hashicorp/go-cty 1.4.1 pseudo-versions. (#6)

1.4.0 (April 7, 2020)

• function/stdlib: The string functions that partition strings into individual characters (grapheme clusters) now use the appropriate segmentation rules from Unicode 12.0.0, while previous versions used Unicode 9.0.0.
• function/stdlib: New functionsReplace andRegexReplace for matching and replacing sequences of characters in a given string with another given string. (#45)
• function/stdlib: The functionSubstr will now produce a zero-length string when given a length of zero. Previously it was incorrectly returning the remainder of the string after the given offset. (#48)
• function/stdlib: TheFloor andCeil functions will now return an infinity if given an infinity, rather than returning the maximum/minimum integer value. (#51)
• cty: Convenience methods for constructing path index steps from normal Go int and string values. (#50)

1.3.1 (March 3, 2020)

• convert: Fix incorrect conversion rules for maps of maps that were leading to panics. This will now succeed in some more cases that ought to have been valid, and produce a proper error if there is no valid outcome. (#47)
• function/stdlib: Fix an implementation error in theContains function that was introduced in 1.3.0, so it will now produce a correct result rather than failing with a confusing error message. (#46)

1.3.0 (February 19, 2020)

• convert: There are now conversions from map types to object types, as long as the given map type's element type is convertible to all of the object type's attribute types. (#42)
• function/stdlib: HashiCorp has contributed a number of additional functions to the standard library that were originally implemented directly inside their Terraform codebase: (#37)
  • Element: take an element from a list or tuple by index, using modulo wrap-around.
  • CoalesceList: return the first non-empty list argument.
  • Compact: take a list of strings and return a new list of strings with all empty strings removed.
  • Contains: returns true if a given value appears as an element in a list, tuple, or set.
  • Distinct: filters duplicate elements from a list while retaining the order of remaining items.
  • ChunkList: turn a list into a list-of-lists where each top-level list is a "chunk" of a particular size of elements from the input.
  • Flatten: given a sequence that might contain other sequences, eliminate any intermediate sequences to produce a flat sequence.
  • Keys: return a list of keys from a map or object value in lexical order.
  • Values: return a list of values from a map in the same order asKeys.
  • Lookup: conditional lookup of an element from a map if it's present, or a fallback value if not. (This one differs from its Terraform equivalent in that the default value argument isrequired.)
  • Merge: given one or more maps or objects, merge them together into a single collection.
  • ReverseList: given a list, return a new list with the same items in the opposite order.
  • SetProduct: compute the cartesian product of one or more sets.
  • Slice: extract a consecutive sub-list from a list.
  • Zipmap: given a pair of lists of the same length, interpret the first as keys and the second as corresponding values to produce a map.
  • A factoryMakeToFunc to build functions that each convert to a particular type constraint.
  • TimeAdd: add a duration to a timestamp to produce a new timestamp.
  • Ceil andFloor: round a fractional value to the nearest integer, away from or towards zero respectively.
  • Log: computes a logarithm in a given base.
  • Pow: implements exponentiation.
  • ParseInt: parses a string containing digits in a particular base to produce a whole number value.
  • Join: concatenates the elements of a list of strings with a given separator to produce a string.
  • Split: partitions a string by a given separator, returning a list of strings.
  • Sort: sorts a list of strings into lexical order.
  • Chomp: removes one or more newline characters from the end of a given string, producing a new string.
  • Indent: prepends a number of spaces to all lines except the first in a given string, producing a new string.
  • Title: converts a string to "title case".
  • TrimSpace: trims spaces from the start and end of a given string.

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