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Warning! This version of documentation is OUTDATED, as it describes an older SDK version! Please switch to the documentation for the latest SDK version.
Warning! This version of documentation describes an old SDK version which is no longer supported! Please upgrade to the latest SDK version.

Foreach

The foreach construct is used to iterate over vectors and maps.

Syntax

Source code (UnigineScript)
foreach(value_variable; container; loop_increment) { 
	// some_code;
}

Parts

  • value_variable is the value of the current container element.
  • container is a vector or a map.
  • loop_increment is executed at the end of each iteration.

On each iteration, the value of the current element is assigned to value_variable and the internal container cursor is moved to point at the next container element. The type of value_variable doesn't matter. loop_increment is optional.

Modifications of elements inside the foreach block affect the container; synchronization occurs at the end of each iteration.

Examples

  • For each vector element:
    Source code (UnigineScript)
    int vector[4] = ( 1, vec3(1,2,3), -7.2e-2, "end" );
    foreach(int i; vector) {
    	log.message("%s\n",typeinfo(i));
    }
    The example displays the following:
    Output
    int: 1
    vec3: 1 2 3
    float: -0.072
    string: "end"
  • For each map element:
    Source code (UnigineScript)
    int map[] = ( 1 : "begin", 2 : 2, 3 : "end" );
    foreach(int i; map) {
    	log.message("%s\n",typeinfo(i));
    }
    The result is:
    Output
    string: "begin"
    int: 2
    string: "end"
  • Increment:
    Source code (UnigineScript)
    foreach(int i, j = 0; vector; j++) {
    	log.message("%d: %s\n",j,typeinfo(i));
    }
    The output is:
    Output
    0: int: 1
    1: vec3: 1 2 3
    2: float: -0.072
    3: string: "end"
Last update: 2017-07-03
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