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How to get the function name from within that function?
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145
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One-liner to take some properties from object in ES 6
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(See a runnable example in this other answer).
@EthanBrown's solution is more general. Here is a more idiomatic version of it which uses Object.assign, and computed properties (the [p] part):
function pick(o, ...props) {
return Object.assign({}, ...props.map(prop => ({[prop]: o[prop]})));
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What is the “double tilde” (~~) operator in JavaScript? [duplicate]
...! Better use zero right shift (>>0), it's the fastest one, and looks more similar to signed-to-unsigned conversion (>>>0).
– Triang3l
Dec 21 '12 at 14:20
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Proper way to wait for one function to finish before continuing?
... are absolutely fine, in my experience they tend to result in code that is more difficult to read and maintain. There are situations where I still use them though, such as to pass in progress events and the like as parameters. This update is just to emphasise alternatives.
Also the original questio...
How do I copy an entire directory of files into an existing directory using Python?
... from a directory that contains a directory named bar (containing one or more files) and a directory named baz (also containing one or more files). Make sure there is not a directory named foo .
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Difference between static memory allocation and dynamic memory allocation
... application to crash, since at some point of time, system cannot allocate more memory.
int* func() {
int* mem = malloc(1024);
return mem;
}
int* mem = func(); /* still accessible */
In the upper example, the allocated memory is still valid and accessible, even though the function termin...
javascript set a variable if undefined
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I'm surprised this pattern isn't included in more JS libs.
– joemaller
Feb 15 '13 at 19:25
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How to get current memory usage in android?
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How to convert a factor to integer\numeric without loss of information?
...l numeric
values, as.numeric(levels(f))[f] is
recommended and slightly more
efficient than
as.numeric(as.character(f)).
The FAQ on R has similar advice.
Why is as.numeric(levels(f))[f] more efficent than as.numeric(as.character(f))?
as.numeric(as.character(f)) is effectively as.numeric...