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JavaScript: How to pass object by value?
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Not really.
Depending on what you actually need, one possibility may be to set o as the prototype of a new object.
var o = {};
(function(x){
var obj = Object.create( x );
obj.foo = 'foo';
obj.bar = 'bar';
})(o);
alert( o.foo ); // undefined
So any properties you add ...
What does if __name__ == “__main__”: do?
...reter reads a source file, it does two things:
it sets a few special variables like __name__, and then
it executes all of the code found in the file.
Let's see how this works and how it relates to your question about the __name__ checks we always see in Python scripts.
Code Sample
Let's use a sl...
How to execute shell command in Javascript
... to address this issue from the perspective of a JavaScript function running in the browser. I'll shoot and answer assuming that when the asker said "Shell Script" he meant a Node.js backend JavaScript. Possibly using commander.js to use frame your code :)
You could use the child_process module fr...
Exif manipulation library for python [closed]
I'm looking for good exif (Exchangeable image file format) manipulation library for python. I prefer flexibility (e.g., ability to retrieve providers' proprietary tags) than processing speed. What would you suggest?
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How to convert JSON string to array
...de, it will fail. Valid JSON strings have quoted keys:
json_decode('{foo:"bar"}'); // this fails
json_decode('{"foo":"bar"}', true); // returns array("foo" => "bar")
json_decode('{"foo":"bar"}'); // returns an object, not an array.
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Where to put include statements, header or source?
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schotschot
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2...
Can we have functions inside functions in C++?
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Modern C++ - Yes with lambdas!
In current versions of c++ (C++11, C++14, and C++17), you can have functions inside functions in the form of a lambda:
int main() {
// This declares a lambda, which can be called just like a function
auto prin...
Html.DropdownListFor selected value not being set
How can I set the selected value of a Html.DropDownListFor? I've been having a look online and have seen that it can be achieved by using the fourth parameter so like the below:
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Why does !{}[true] evaluate to true in JavaScript?
{}[true] is [true] and ![true] should be false .
10 Answers
10
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Is there any difference between “foo is None” and “foo == None”?
Is there any difference between:
12 Answers
12
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