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Rails find record with zero has_many records associated [duplicate]
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Bah, found it here: https://stackoverflow.com/a/5570221/417872
City.includes(:photos).where(photos: { city_id: nil })
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image.onload event and browser cache
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answered Sep 10 '12 at 15:41
Fabrício MattéFabrício Matté
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How to get first 5 characters from string [duplicate]
...F-16, etc.) use mb_substr:
// singlebyte strings
$result = substr($myStr, 0, 5);
// multibyte strings
$result = mb_substr($myStr, 0, 5);
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How to remove the lines which appear on file B from another file A?
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207
If the files are sorted (they are in your example):
comm -23 file1 file2
-23 suppresses the ...
How do you create optional arguments in php?
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jeremy
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answered Aug 29 '08 at 17:58
Jeff WinkworthJeff...
Rails 4: before_filter vs. before_action
In rails >4.0.0 generators creates CRUD operations with before_action not before_filter . It seems to do the same thing. So what's the difference between these two?
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split string in to 2 based on last occurrence of a separator
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120
Use rpartition(s). It does exactly that.
You can also use rsplit(s, 1).
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“Automatic” vs “Automatic (Delayed start)”
...es\<service name>\DelayedAutostart will have the value 1 if delayed, 0 if not.
HKLM\SYSTEM\CurrentControlSet\services\AutoStartDelay or HKLM\SYSTEM\CurrentControlSet\Control\AutoStartDelay (on Windows 10): decimal number of seconds to wait, may need to create this one. Applies globally to all ...
Template function inside template class
...BKerrek SB
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How to get HTTP Response Code using Selenium WebDriver
...with Selenium2/WebDriver and want to test if HTTP Request returns an HTTP 403 Forbidden.
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