Set a string to v8 Array

Question

I investigate native Node addons using Nan.

So I'm trying to return back to Node an array of strings with the following code:

NAN_METHOD(open) {
    Local<Array> v8Array = Nan::New<Array>();
    std::string str = "erwer";
    v8Array->Set(0, Nan::New<String>(str.c_str()) );
    //v8Array->Set(0, Nan::New<Integer>(12) );
    info.GetReturnValue().Set(v8Array);
}

But it isn't compiled:

error: no matching function for call to ‘v8::Array::Set(int, Nan::imp::MaybeFactoryBase<v8::String>::return_t)’ v8Array->Set(0, Nan::New<String>(str.c_str()) );

But adding an item as integer (commented line) works properly. Why can't I add a string to array?

Rax Wunter · Accepted Answer · 2015-10-06 13:48:57Z

6

So, finally I realised that the second argument in case of being a String should be wrapped with ToLocalChecked():

v8Array->Set(i, Nan::New<String>(results[i].c_str()).ToLocalChecked() );

answered Oct 6, 2015 at 13:48

Rax Wunter

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