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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
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answered Feb 15 '12 at 0:25
Dan WichDan Wich
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Associative arrays in Shell scripts
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20
To add to Irfan's answer, here is a shorter and faster version of get() since it requires no ite...
How do I clear this setInterval inside a function?
...unction() {
if (timedCount >= markers.length) {
timedCount = 0;
}
google.maps.event.trigger(markers[timedCount], "click");
timedCount++;
}, 5000 );
};
var id = intervalTrigger();
Then to clear the interval:
window.clearInterval(id);
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Ruby Regexp group matching, assign variables on 1 line
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201
You don't want scan for this, as it makes little sense. You can use String#match which will ret...
Gradle, “sourceCompatibility” vs “targetCompatibility”?
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answered May 21 '13 at 9:07
MattMatt
7,70133 gold badges2525 silver badges5555 bronze badges
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Comments in .gitignore?
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edited Jan 29 '16 at 1:50
Nicolas Raoul
52.9k4949 gold badges189189 silver badges326326 bronze badges
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How do I enable C++11 in gcc?
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edited Jun 2 '13 at 20:11
answered Jun 2 '13 at 19:57
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Why use apparently meaningless do-while and if-else statements in macros?
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#define BAR(X) do { \
int i = f(X); \
if (i > 4) g(i); \
} while (0)
You don't have to use do ... while, you could cook up something with if ... else as well, although when if ... else expands inside of an if ... else it leads to a "dangling else", which could make an existing dangling el...
What is this: [Ljava.lang.Object;?
...list. Here are some examples:
// xxxxx varies
System.out.println(new int[0][0][7]); // [[[I@xxxxx
System.out.println(new String[4][2]); // [[Ljava.lang.String;@xxxxx
System.out.println(new boolean[256]); // [Z@xxxxx
The reason why the toString() method on arrays returns String in this format is ...
What does curly brackets in the `var { … } = …` statements do?
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edited May 19 '16 at 12:07
Red15
66555 silver badges1616 bronze badges
answered Mar 8 '13 at 10:09
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