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String replacement in java, similar to a velocity template
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143
Use StringSubstitutor from Apache Commons Text.
https://commons.apache.org/proper/commons-tex...
Postgresql aggregate array
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163
Use array_agg: http://www.sqlfiddle.com/#!1/5099e/1
SELECT s.name, array_agg(g.Mark) as mark...
How to check an Android device is HDPI screen or MDPI screen?
...rces().getDisplayMetrics().density;
// return 0.75 if it's LDPI
// return 1.0 if it's MDPI
// return 1.5 if it's HDPI
// return 2.0 if it's XHDPI
// return 3.0 if it's XXHDPI
// return 4.0 if it's XXXHDPI
share
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How to add 10 days to current time in Rails
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Use
Time.now + 10.days
or even
10.days.from_now
Both definitely work. Are you sure you're in Rails and not just Ruby?
If you definitely are in Rails, where are you trying to run this from? Note that Active Support has to be loaded.
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How To Set A JS object property name from a variable
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196
var jsonVariable = {};
for(var i=1; i < 3; i++) {
jsonVariable[i + 'name'] = 'name' + i; ...
Comparing two collections for equality irrespective of the order of items in them
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19 Answers
19
Active
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What is the difference between Step Into and Step Over in the Eclipse debugger?
...STEP INTO
}
static void g (int x) {
-> f(x); //
f(1); // <----------------------------------- STEP OVER
}
public static void main (String args[]) {
g(2);
g(3); // <----------------------------------- STEP OUT OF
}
}
If you were to step in...
Under what circumstances are linked lists useful?
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15 Answers
15
Active
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fatal: Not a valid object name: 'master'
I have a private server running git 1.7
When I
4 Answers
4
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Why is git push gerrit HEAD:refs/for/master used instead of git push origin master
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edited May 19 '16 at 5:34
answered May 5 '12 at 12:05
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