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How to sort List of objects by some property
...verride
public int compare(ActiveAlarm x, ActiveAlarm y) {
// TODO: Handle null x or y values
int startComparison = compare(x.timeStarted, y.timeStarted);
return startComparison != 0 ? startComparison
: compare(x.timeEnded, y.timeEnded);
}
// I don'...
How do write IF ELSE statement in a MySQL query
...pression.
They look like this:
SELECT col1, col2, (case when (action = 2 and state = 0)
THEN
1
ELSE
0
END)
as state from tbl1;
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When to add what indexes in a table in Rails
...ld be better, because it accelerates the search in sorting in this column. And Foreign keys are something searched for a lot.
Since Version 5 of rails the index will be created automatically, for more information see here.
Should I add "index" to the automatically created "id" column?
No, thi...
How do I rename a column in a SQLite database table?
...has been asked on stackoverflow previously, but it was for SQL in general, and the case of SQLite was not mentioned.
15 Ans...
How can I unstage my files again after making a local commit?
I have executed the following command
7 Answers
7
...
Chrome Dev Tools - “Size” vs “Content”
...in the Network tab of Chrome's dev tools, one column specifies both "size" and "content":
4 Answers
...
Obfuscated C Code Contest 2006. Please explain sykes2.c
...char(32 | (b & 1));
}
}
Now, note that a[b] is the same as b[a], and apply the -~ == 1+ change again:
main(int i) {
if(i != 448)
main(i+1);
i--;
if(i % 64 == 0) {
putchar('\n');
} else {
char a = (">'txiZ^(~z?"-48)[(__TIME__-i/8%8)[7]] + 1;
...
Should I write script in the body or the head of the html? [duplicate]
... the structures are a bit different. In your experience, which work better and why?
5 Answers
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Integrating the ZXing library directly into my Android application
I'm writing this in mere desperation :) I've been assigned to make a standalone barcode scanner (as a proof of concept) to an Android 1.6 phone.
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bash: shortest way to get n-th column of output
...repeatedly encounter the following form of columnized output from some command in bash (in my case from executing svn st in my Rails working directory):
...