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On design patterns: When should I use the singleton?
...e glorified global variable - becomes a gloried global class. Some say breaking object-oriented design.
19 Answers
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Vagrant error : Failed to mount folders in Linux guest
...some issues with Vagrant shared folders, my base system is Ubuntu 13.10 desktop.
21 Answers
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Which types can be used for Java annotation members?
... answered Sep 22 '09 at 7:13
skaffmanskaffman
374k9292 gold badges779779 silver badges744744 bronze badges
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What does “opt” mean (as in the “opt” directory)? Is it an abbreviation? [closed]
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In the old days, "/opt" was used by UNIX vendors like AT&T, Sun, DEC and 3rd-party vendors to hold "Option" packages; i.e. packages that you might have paid extra money for. I don't recall seeing "/opt" on Berkeley BSD UNIX. They used "/usr/local" for stuff that you ins...
jQuery AJAX submit form
... edited Mar 18 '17 at 13:31
K DawG
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answered Dec 25 '09 at 1:36
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jQuery same click event for multiple elements
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$('.class1, .class2').on('click', some_function);
Or:
$('.class1').add('.class2').on('click', some_function);
This also works with existing objects:
const $class1 = $('.class1');
const $class2 = $('.class2');
$class1.add($class2).on('click', some_fu...
TypeError: Missing 1 required positional argument: 'self'
... answered Jul 8 '13 at 19:23
Sukrit KalraSukrit Kalra
25.8k55 gold badges5454 silver badges6767 bronze badges
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What are bitwise shift (bit-shift) operators and how do they work?
...000 00001100
to the right by one position (12 >>> 1) will get back our original 6:
00000000 00000000 00000000 00000110
So we see that shifting to the right is equivalent to division by powers of 2.
Lost bits are gone
However, a shift cannot reclaim "lost" bits. For example, if we shift t...
Maximum packet size for a TCP connection
What is the maximum packet size for a TCP connection or how can I get the maximum packet size?
10 Answers
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TSQL - How to use GO inside of a BEGIN .. END block?
...rom multiple development databases to staging/production. Basically, it takes a bunch of change-scripts, and merges them into a single script, wrapping each script in a IF whatever BEGIN ... END statement.
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