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How to get current memory usage in android?
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Determine if variable is defined in Python [duplicate]
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This debate is much more interesting that the answer itself, which by the way is 100% correct and let you handle poor legacy code elegantly.
– e-satis
Mar 31 '10 at 13:46
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Android: Clear the back stack
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I also added one more clear Intent intent = new Intent(SingUpActivity.this, LoginActivity.class); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP); ...
iPhone Keyboard Covers UITextField
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Why do we use arrays instead of other data structures?
... up time (The look up cost increases as each element is added). It is much more expensive to get to P1000 compared to getting to P4.
Higher level data structures, such as hashtables, stacks and queues, all may use an array (or multiple arrays) internally, while Linked Lists and Binary Trees usually...
Which is the fastest algorithm to find prime numbers?
...mentation of the Sieve of Atkin is Dan Bernstein's primegen. This sieve is more efficient than the Sieve of Eratosthenes. His page has some benchmark information.
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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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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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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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