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Differences between Perl and PHP [closed]
..., even though PHP is often more English-like, it sometimes still shows its roots as a wrapper for low level C, for example, strpbrk and strspn are probably rarely used, because most PHP dabblers write their own equivalent functions for anything too esoteric, rather than spending time exploring the m...
What is the optimal length for an email address in a database?
... then you can/must use a VARCHAR(254) to store an email address.
Note: In MySQL at least, a column declared as VARCHAR whit less or equal than 255 octets will be all stored as 1 byte + length (the 1 is to store the length) so no space is gained if used a lower limit.
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How can I join multiple SQL tables using the IDs?
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ruby system command check exit code
...capture it as part of your REPL command [10] pry(main)> system("touch /root/test 2> /dev/null") => false [11] pry(main)> $?.exitstatus => 0 [12] pry(main)> system("touch /root/test 2> /dev/null"); $?.exitstatus => 1
– lardcanoe
Mar 9 '1...
Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
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Note, MySQL doesn't allow default values on TEXT/BLOB columns. Otherwise this is the ideal solution
– Andrew Vit
Mar 20 '13 at 18:35
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How can I get the external SD card path for Android 4.0+?
...nment.getExternalStorageDirectory();
//Retrieve the External Storages root directory:
final String externalStorageRootDir;
if ( (externalStorageRootDir = primaryExternalStorage.getParent()) == null ) { // no parent...
Log.d(TAG, "External Storage: " + primaryExternalStorage + "...
Warning: The Copy Bundle Resources build phase contains this target's Info.plist file
...hat from English to German (and thus not having the file anymore in either root or en.lproj), I started to have trouble.
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Error when testing on iOS simulator: Couldn't register with the bootstrap server
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Have you tried killing these zombie processes as root? I rebooted before I thought of doing it.
– Ryan H.
Jan 13 '12 at 16:34
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How do you organise multiple git repositories, so that all of them are backed up together?
...stem hierarchy including its own bin and lib dirs. There is script in the root of this tree that will setup your environment to add these bin, lib, etc... other dirs to the proper environment variables. So the root directory essentially looks like:
./bin/ # prepended to $PATH
./lib/ ...
Does using final for variables in Java improve garbage collection?
...sweep GC algorithm, which has to examine all the live refereces in the GC "root" locations (like all the objects in the current call stack). Each live object is "marked" as being alive, and any object referred to by a live object is also marked as being alive.
After the completion of the mark phase...