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Doctrine and composite unique keys
...straint;
/**
* Common\Model\Entity\VideoSettings
*
* @Table(name="video_settings",
* uniqueConstraints={
* @UniqueConstraint(name="video_unique",
* columns={"video_dimension", "video_bitrate"})
* }
* )
* @Entity
*/
See @UniqueConstraint
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When should null values of Boolean be used?
...lean(true);
Please see autoboxing here: http://en.wikipedia.org/wiki/Boxing_%28computer_science%29#Autoboxing
Perhaps this is where much of the confusion comes from.
EDIT2: Please read comments below.
If anyone has an idea of how to restructure my answer to incorporate this, please do so.
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Select 50 items from list at random to write to file
...an just take the first 50.
Otherwise, use
import random
random.sample(the_list, 50)
random.sample help text:
sample(self, population, k) method of random.Random instance
Chooses k unique random elements from a population sequence.
Returns a new list containing elements from the populat...
For files in directory, only echo filename (no path)
...g more about parameter expansion: wiki.bash-hackers.org/syntax/pe#substring_removal
– DougW
Jan 26 '12 at 1:59
1
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Why can I pass 1 as a short, but not the int variable i?
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So... it does not matter how explicit i am... >_<. Do you have any idea if i can detect if a litereal was passed or a int variable?
– user34537
Jul 11 '12 at 12:21
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What in the world are Spring beans?
...dia I should say "instance objects" instead: en.wikipedia.org/wiki/Instance_(computer_science)
– Elias Dorneles
Oct 5 '18 at 16:03
2
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How do I use JDK 7 on Mac OSX?
... With Java 7 r21, I see /Library/Java/JavaVirtualMachines/jdk1.7.0_21.jdk/. The Java Control Panel is now accessed through System Preferences (OSX 10.8.3)
– Sofi Software LLC
May 28 '13 at 17:59
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Print text instead of value from C enum
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I use something like this:
in a file "EnumToString.h":
#undef DECL_ENUM_ELEMENT
#undef DECL_ENUM_ELEMENT_VAL
#undef DECL_ENUM_ELEMENT_STR
#undef DECL_ENUM_ELEMENT_VAL_STR
#undef BEGIN_ENUM
#undef END_ENUM
#ifndef GENERATE_ENUM_STRINGS
#define DECL_ENUM_ELEMENT( element ) element,
#...
Manually adding a Userscript to Google Chrome
...named: manifest.json.
For our example, it should contain:
{
"manifest_version": 2,
"content_scripts": [ {
"exclude_globs": [ ],
"include_globs": [ "*" ],
"js": [ "HelloWorld.user.js" ],
"matches": [ "https://stackoverflow.com/...
How to grep (search) committed code in the Git history
... Excellent. +1. The GitBook add some details (book.git-scm.com/4_finding_with_git_grep.html), and Junio C Hamano illustrates some of your points: gitster.livejournal.com/27674.html
– VonC
May 28 '10 at 21:26
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