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git: difference between “branchname” and “refs/heads/branchname”
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128
A ref is anything pointing to a commit, for example, branches (heads), tags, and remote branche...
Order of member constructor and destructor calls
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142
In other words, are members guaranteed to be initialized by order of declaration and destroyed ...
MySQL CONCAT returns NULL if any field contain NULL
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288
convert the NULL values with empty string by wrapping it in COALESCE
SELECT CONCAT(COALESCE(`...
How do you use window.postMessage across domains?
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Here is an example that works on Chrome 5.0.375.125.
The page B (iframe content):
<html>
<head></head>
<body>
<script>
top.postMessage('hello', 'A');
</script>
</body>
</html>
Note t...
How do I get cURL to not show the progress bar?
...m, you could always redirect stderr to /dev/null:
curl http://google.com 2>/dev/null > temp.html
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Replace first occurrence of string in Python
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2 Answers
2
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Appending HTML string to the DOM
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247
Use insertAdjacentHTML if it's available, otherwise use some sort of fallback. insertAdjacentH...
How to determine if one array contains all elements of another array
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a = [5, 1, 6, 14, 2, 8]
b = [2, 6, 15]
a - b
=> [5, 1, 14, 8]
b - a
=> [15]
(b - a).empty?
=> false
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How to edit multi-gigabyte text files? Vim doesn't work =( [closed]
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72
If you are on *nix (and assuming you have to modify only parts of file (and rarely)), you may sp...
Using pg_dump to only get insert statements from one table within database
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232
if version < 8.4.0
pg_dump -D -t <table> <database>
Add -a before the -t...