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Can table columns with a Foreign Key be NULL?
...d Mar 2 '10 at 21:37
Daniel VassalloDaniel Vassallo
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What Vim command(s) can be used to quote/unquote words?
...tes.
Change single quotes to double quotes
va':s/\%V'\%V/"/g
va' - Visually select the quoted word and the quotes.
:s/ - Start a replacement.
\%V'\%V - Only match single quotes that are within the visually selected region.
/"/g - Replace them all with double quotes.
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How do you input commandline argument in IntelliJ IDEA?
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Windows, Linux, some Macs:
ALT+SHIFT+F10, Right, E, Enter, Tab, enter your command line parameters, Enter. ;-)
Mac with "OS X 10.5" key schema:
CTRL+ALT+R, Right, E, Enter, Tab, enter your command line parameters, Enter.
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Where is git.exe located?
...a location like: C:\Users\<username>\AppData\Local\GitHub\PortableGit_<numbersandletters>\bin\git.exe
That's the situation for me, in Windows 7 + version 1.0 of GitHub for Windows.
In Windows 10 it appears to be in:
C:\Users\<username>\AppData\Local\GitHub\PortableGit_<number...
How does @synchronized lock/unlock in Objective-C?
Does @synchronized not use "lock" and "unlock" to achieve mutual exclusion? How does it do lock/unlock then?
5 Answers
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Validate phone number with JavaScript
...he form NXX NXX XXXX where N is a digit 2-9 and X is a digit 0-9. Additionally, area codes and exchanges may not take the form N11 (end with two ones) to avoid confusion with special services except numbers in a non-geographic area code (800, 888, 877, 866, 855, 900) may have a N11 exchange.
So, y...
Use of alloc init instead of new
...swered Mar 6 '13 at 15:49
guitar_freakguitar_freak
4,19566 gold badges2727 silver badges4242 bronze badges
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What is LDAP used for?
...e extremely fast read/query performance for a large scale of dataset. Typically you want to store only a small piece of information for each entry. The add/delete/update performance is relatively slower compared with read/query because the assumption is that you don’t do “update” that often.
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How to replace a string in multiple files in linux command line
...is appended to the old file names. So sed -i .bak 's/foo/bar/g' *.xx moves all .xx files to the equivalent .xx.bak name and then generates the .xx files with the foo→bar substitution.
– Anaphory
Oct 4 '14 at 22:35
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How to insert in XSLT
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The link Top Ten Java and XSLT Tips is really useful.
– LCJ
Feb 5 '16 at 16:41
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