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Is it possible to create a “weak reference” in javascript?
...ove-reference method, and when there are no manually-tracked references anymore then entry can be deleted, leaving future lookups on that key to return null.
This is not really a weakref, but it can solve some of the same problems. It's typically done in complex web applications to prevent memory l...
How to remove an item for a OR'd enum?
...) with some value (let's call that value 'X') and the complement of one or more set bits (let's call those bits Q and their complement ~Q), the statement X & ~Q clears any bits that were set in Q from X and returns the result.
So to remove or clear the BLUE bits, you use the following statement...
How does std::forward work? [duplicate]
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How to extract text from a string using sed?
... like sed -n 's/\(.*[^0-9]\)\?\([0-9][0-9]*G[0-9][0-9]*\).*/\2/p' would be more general. (I assume your sed supports \? for zero or one occurrence.)
– tripleee
Dec 12 '13 at 11:53
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What is the difference between a stored procedure and a view?
... for user_id 25, where the 25 is your parameter.
There is obviously a lot more detail, this is just the basic idea.
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How do I pause my shell script for a second before continuing?
... I always forget it's sleep! (pause, wait, or delay would make more sense and be easier to remember.)
– Geremia
Dec 31 '15 at 20:50
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Focusable EditText inside ListView
...since I know which header view I want to override the selector (would take more work to dynamically determine if any given position contains a focusable view), I can change descendant focusability, and set focus on the EditText. And when I navigate out of that header, change it back it again.
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How do you do block comments in YAML?
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How do I create a namespace package in Python?
... containing an __init__.py file
A namespace package, represented by one or more directories foo without any __init__.py files
Packages are modules too, but here I mean "non-package module" when I say "module".
First it scans sys.path for a module or regular package. If it succeeds, it stops searc...
What is the difference between #include and #include “filename”?
...his method is normally used to include programmer-defined header files.
A more complete description is available in the GCC documentation on search paths.
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