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C

Append New Item to JSON Array

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Demonstrates the notations that can be used in a JSON array index to append to the end of an array.

Chilkat C Downloads

C
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    HCkJsonObject json;

    // Starting in Chilkat v9.5.0.77, the following notations are possible to specify that the value
    // should be appended to the end of the array. (In other words, if the array currenty has N elements, then "-1", "", or "*" 
    // indicate an index of N+1.

    json = CkJsonObject_Create();

    CkJsonObject_UpdateInt(json,"lanes[-1]",0);
    CkJsonObject_UpdateInt(json,"lanes[]",1);
    CkJsonObject_UpdateInt(json,"lanes[*]",2);
    CkJsonObject_UpdateInt(json,"lanes[-1]",3);

    printf("%s\n",CkJsonObject_emit(json));

    // Output is:  {"lanes":[0,1,2,3]}


    CkJsonObject_Dispose(json);

    }