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Should you commit .gitignore into the Git repos?
Do you think it is a good practice to commit .gitignore into a Git repo?
5 Answers
5
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CSS horizontal centering of a fixed div?
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it doesn't work as intended when you resize the browser window.
– user126284
Aug 27 '11 at 4:37
3
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Easy way to test a URL for 404 in PHP?
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If you are using PHP's curl bindings, you can check the error code using curl_getinfo as such:
$handle = curl_init($url);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE);
/* Get the HTML or whatever is linked in $url. */
$response = curl_exec($handle);
/* Check for 404 (file n...
Assigning default values to shell variables with a single command in bash
...hat you posted, actually:
FOO=${VARIABLE:-default} # If variable not set or null, use default.
Or, which will assign default to VARIABLE as well:
FOO=${VARIABLE:=default} # If variable not set or null, set it to default.
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How to check whether a file or directory exists?
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// exists returns whether the given file or directory exists
func exists(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil { return true, nil }
if os.IsNotExist(err) { return false, nil }
return false, err
}
Edited to add error han...
What is the difference between quiet NaN and signaling NaN?
...omputation continues without any signal from the floating point unit (FPU) or library if floating-point is implemented in software. A signalling NaN will produce a signal, usually in the form of exception from the FPU. Whether the exception is thrown depends on the state of the FPU.
C++11 adds a ...
Check if a method exists
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if ([obj respondsToSelector:@selector(methodName:withEtc:)]) {
[obj methodName:123 withEtc:456];
}
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Get jQuery version from inspecting the jQuery object
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You can use either $().jquery; or $.fn.jquery which will return a string containing the version number, e.g. 1.6.2.
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git diff two files on same branch, same commit
sorry if this question exists, I surprisingly could not find it :/
6 Answers
6
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How to determine if a record is just created or updated in after_save
The #new_record? function determines if a record has been saved. But it is always false in the after_save hook. Is there a way to determine whether the record is a newly created record or an old one from update?
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