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Difference between Destroy and Delete
...once. It
generates at least one SQL DELETE query per record (or possibly more,
to enforce your callbacks). If you want to delete many rows quickly,
without concern for their associations or callbacks, use delete_all
instead.
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Check if string ends with one of the strings from a list
... for sets, {'.mp3','.avi'}, it avoids the extra type conversion and may be more readable depending on your background ('Though it can cause confusion with dictionaries, and cannot be used to create empty sets).
– Perkins
Aug 21 '13 at 8:44
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ActiveRecord: size vs count
... records using both Model.size and Model.count . If you're dealing with more complex queries is there any advantage to using one method over the other? How are they different?
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What does the restrict keyword mean in C++?
...n arguments.
This restricts how the function can be called, but allows for more compile optimizations.
If the caller does not follow the restrict contract, undefined behavior.
The C99 N1256 draft 6.7.3/7 "Type qualifiers" says:
The intended use of the restrict qualifier (like the register storage c...
json_decode to array
... to be proved (ref). In either case, the advantage might be that the OP is more comfortable traversing arrays than objects, or that some other, already implemented, code requires an array.
– jamesnotjim
Mar 6 '13 at 15:31
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Remove leading zeros from a number in Javascript [duplicate]
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Adding header for HttpURLConnection
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How to use `subprocess` command with pipes
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How to check if an int is a null
...tive type data to Integer.
When concerning about the memory Integer takes more memory than int. But the difference of memory allocation, nothing to be considered.
In this case you must use Inter instead of int
Try below snippet and see example for more info,
Integer id;
String name;
//Refer th...
How to align checkboxes and their labels consistently cross-browsers
... many times in the comments, this answer does not work on most browsers anymore (and seems to be failing to do that since 2013).
After over an hour of tweaking, testing, and trying different styles of markup, I think I may have a decent solution. The requirements for this particular project were:
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