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Commitff3b62e

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1 parent5e92601 commitff3b62e

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7 files changed

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7 files changed

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‎CHANGELOG.md‎

Lines changed: 3 additions & 1 deletion
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@@ -4,12 +4,13 @@
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<sectionclass="release"id="unreleased">
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7-
##Unreleased (2024-06-18)
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##Unreleased (2024-06-19)
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<sectionclass="features">
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1111
###Features
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-[`550285b`](https://github.com/stdlib-js/stdlib/commit/550285bf4a57dd3dabc8ed3998e7b612515fe082) - add support for boolean and mask array assignment
1314
-[`b079d65`](https://github.com/stdlib-js/stdlib/commit/b079d653226019925581555fdaf9aa927ec69c0e) - add support for integer array indexing assignment
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-[`96e896a`](https://github.com/stdlib-js/stdlib/commit/96e896a39be08912b2e06dfb6b671ec13d042412) - add support for boolean array indices
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@@ -23,6 +24,7 @@
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<details>
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-[`550285b`](https://github.com/stdlib-js/stdlib/commit/550285bf4a57dd3dabc8ed3998e7b612515fe082) -**feat:** add support for boolean and mask array assignment_(by Athan Reines)_
2628
-[`074cbef`](https://github.com/stdlib-js/stdlib/commit/074cbef3f9d616c37c2be856a949e257481ff2fc) -**docs:** add note concerning broadcasting of nested array elements_(by Athan Reines)_
2729
-[`b079d65`](https://github.com/stdlib-js/stdlib/commit/b079d653226019925581555fdaf9aa927ec69c0e) -**feat:** add support for integer array indexing assignment_(by Athan Reines)_
2830
-[`96e896a`](https://github.com/stdlib-js/stdlib/commit/96e896a39be08912b2e06dfb6b671ec13d042412) -**feat:** add support for boolean array indices_(by Athan Reines)_

‎README.md‎

Lines changed: 29 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -555,6 +555,35 @@ z = y[ i ];
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i=idx(newInt32Array( [0,0,1,1,2,2 ] ) );// integer index array
556556
z= y[ i ];
557557
// returns [ 1, 1, 2, 2, -10, -10 ]
558+
559+
// Array index assignment:
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x= [1,2,3,4,5,6 ];
561+
y=array2fancy( x );
562+
563+
i=idx( [true,false,true,false,true,false ] );// boolean array
564+
y[ i ]=5;
565+
z= y[':' ];
566+
// returns [ 5, 2, 5, 4, 5, 6 ]
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568+
i=idx(newBooleanArray( [true,false,true,false,true,false ] ) );// boolean array
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y[ i ]=7;
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z= y[':' ];
571+
// returns [ 7, 2, 7, 4, 7, 6 ]
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573+
i=idx(newUint8Array( [1,1,1,0,0,0 ] ) );// mask array
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y[ i ]=8;
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z= y[':' ];
576+
// returns [ 7, 2, 7, 8, 8, 8 ]
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i=idx(newInt32Array( [5,3,2 ] ) );// integer index array
579+
y[ i ]= [9,10,11 ];
580+
z= y[':' ];
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// returns [ 7, 2, 11, 10, 8, 9 ]
582+
583+
i=idx( [0,1 ] );// integer index array
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y[ i ]=-1;
585+
z= y[':' ];
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// returns [ -1, -1, 11, 10, 8, 9 ]
558587
```
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</section>

‎dist/index.js‎

Lines changed: 57 additions & 57 deletions
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‎dist/index.js.map‎

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‎examples/index.js‎

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Original file line numberDiff line numberDiff line change
@@ -78,3 +78,32 @@ i = idx( new Int32Array( [ 0, 0, 1, 1, 2, 2 ] ) ); // integer index array
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z=y[i];
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console.log(z);
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// => [ 1, 1, 2, 2, -10, -10 ]
81+
82+
// Array index assignment:
83+
x=[1,2,3,4,5,6];
84+
y=array2fancy(x);
85+
86+
i=idx([true,false,true,false,true,false]);// boolean array
87+
y[i]=5;
88+
console.log(y);
89+
// => [ 5, 2, 5, 4, 5, 6 ]
90+
91+
i=idx(newBooleanArray([true,false,true,false,true,false]));// boolean array
92+
y[i]=7;
93+
console.log(y);
94+
// => [ 7, 2, 7, 4, 7, 6 ]
95+
96+
i=idx(newUint8Array([1,1,1,0,0,0]));// mask array
97+
y[i]=8;
98+
console.log(y);
99+
// => [ 7, 2, 7, 8, 8, 8 ]
100+
101+
i=idx(newInt32Array([5,3,2]));// integer index array
102+
y[i]=[9,10,11];
103+
console.log(y);
104+
// => [ 7, 2, 11, 10, 8, 9 ]
105+
106+
i=idx([0,1]);// integer index array
107+
y[i]=-1;
108+
console.log(y);
109+
// => [ -1, -1, 11, 10, 8, 9 ]

‎lib/set_elements.js‎

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Original file line numberDiff line numberDiff line change
@@ -20,9 +20,12 @@
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// MODULES //
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varisMostlySafeCast=require('@stdlib/array-base-assert-is-mostly-safe-data-type-cast');
2324
varisCollection=require('@stdlib/assert-is-collection');
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varscalar2array=require('@stdlib/array-from-scalar');
26+
vardtype=require('@stdlib/array-dtype');
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varput=require('@stdlib/array-put');
28+
varwhere=require('@stdlib/array-base-where').assign;
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varformat=require('@stdlib/string-format');
2730
varprop2array=require('./prop2array.js');
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varerrMessage=require('./error_message.js');
@@ -52,12 +55,14 @@ var errMessage = require( './error_message.js' );
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functionsetElements(target,property,value,ctx){
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varidx;
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varerr;
58+
vardt;
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varv;
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5761
idx=prop2array(property,ctx.cache);
5862
if(isCollection(value)){
5963
// When handling collections, we delegate to implementation APIs (see below) to perform argument validation (e.g., ensuring a (mostly) safe cast, broadcast compatibility, etc), so we just reassign the value here:
6064
v=value;
65+
dt=dtype(value)||'generic';
6166
}else{
6267
// When provided a "scalar", we need to check whether the value can be safely cast to the target array data type:
6368
err=ctx.validator(value,ctx.dtype);
@@ -71,22 +76,27 @@ function setElements( target, property, value, ctx ) {
7176
}
7277
// As the scalar can be safely cast, convert the scalar to an array having the same data type as the target array to allow for broadcasting during assignment:
7378
v=scalar2array(v,ctx.dtype);
79+
dt=ctx.dtype;
7480
}
7581
if(idx.type==='int'){
7682
try{
77-
put(target,idx.data,v);
83+
put(target,idx.data,v);// note: defer to `put` for ensuring a mostly safe cast
7884
}catch(err){
7985
thrownewerr.constructor(errMessage(err.message));
8086
}
8187
returntrue;
8288
}
89+
// Safe casts are always allowed and allow same kind casts (i.e., downcasts) only when the target array data type is floating-point...
90+
if(!isMostlySafeCast(dt,ctx.dtype)){
91+
thrownewTypeError(format('invalid operation. Assigned value cannot be safely cast to the target array data type. Data types: [%s, %s].',dt,ctx.dtype));
92+
}
8393
if(idx.type==='bool'){
84-
// FIXME:where( idx.data, target,value );
85-
returnfalse;
94+
where(idx.data,v,target,target,1,0);
95+
returntrue;
8696
}
8797
if(idx.type==='mask'){
88-
// FIXME:where( idx.data,value,target );
89-
returnfalse;
98+
where(idx.data,target,v,target,1,0);
99+
returntrue;
90100
}
91101
thrownewError(format('invalid operation. Unrecognized array index type. Value: `%s`.',idx.type));
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}

‎package.json‎

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"@stdlib/array-base-arraylike2object":"^0.2.1",
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"@stdlib/array-base-assert-is-boolean-data-type":"github:stdlib-js/array-base-assert-is-boolean-data-type#main",
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"@stdlib/array-base-assert-is-complex-floating-point-data-type":"^0.2.1",
43+
"@stdlib/array-base-assert-is-mostly-safe-data-type-cast":"^0.2.1",
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"@stdlib/array-base-assert-is-real-floating-point-data-type":"^0.2.1",
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"@stdlib/array-base-assert-is-safe-data-type-cast":"^0.3.1",
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"@stdlib/array-base-assert-is-signed-integer-data-type":"^0.2.1",
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"@stdlib/array-base-assert-is-unsigned-integer-data-type":"^0.2.1",
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"@stdlib/array-base-fancy-slice":"^0.3.1",
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"@stdlib/array-base-fancy-slice-assign":"^0.2.1",
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"@stdlib/array-base-min-signed-integer-dtype":"^0.2.1",
51+
"@stdlib/array-base-where":"github:stdlib-js/array-base-where#main",
52+
"@stdlib/array-dtype":"^0.2.1",
5053
"@stdlib/array-from-scalar":"^0.2.1",
5154
"@stdlib/array-index":"^0.2.1",
5255
"@stdlib/array-min-dtype":"^0.2.1",

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