fcf.append() function
Package: fcf-framework-core
File: fcf-framework-core:fcf.js
Available from version: 2.0.2
Copies data from sources
Arguments
- If the argument is true , then the data is copied recursively, so the recipient gets copies of the objects, not copies of the references to the original.
- An object that will be supplemented with additional data
- Objects whose data will be supplemented by the receiver
Result
- Returns the a_dest argument
Example: Function application
{
let dest = {"k1": "v1"};
let source = {"k2": "v2"};
fcf.append(dest, source);
console.log(dest);
}
console.log("");
{
let dest = [1];
let source = [2];
fcf.append(dest, source);
console.log(dest);
}
console.log("");
{
let dest = new Map();
let source = {"k2": "v2"};
fcf.append(dest, source);
console.log(dest);
}
console.log("");
{
let dest = new Set();
dest.add("k1")
let source = ["k2"];
fcf.append(dest, source);
console.log(dest);
}
Output:
{ k1: 'v1', k2: 'v2' }
[ 1, 2 ]
Map(1) { 'k2' => 'v2' }
Set(2) { 'k1', 'k2' }
Example: Copying data with recreating objects
{
let dest = {
o: {
"k1": "v1"
}
};
let source = {
o: {
"new_key": "new_value"
}
};
fcf.append(true, dest, source);
console.log(`dest: `, dest);
console.log(`dest.o === source.o: `, dest.o === source.o);
}
Output:
dest: { o: { new_key: 'new_value' } }
dest.o === source.o: false
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