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What are the main uses of yield(), and how does it differ from join() and interrupt()?
...ifferent from a non-zero sleep where the sleeping thread
generally loses 1 quantum value (in effect, 1/3 of a 10 or 15ms tick).
In Java 6, this behaviour was changed. The Hotspot VM now implements
Thread.yield() using the Windows SwitchToThread() API call. This call
makes the current thre...
An efficient way to transpose a file in Bash
...
115
awk '
{
for (i=1; i<=NF; i++) {
a[NR,i] = $i
}
}
NF>p { p = NF }
END {...
“x not in y” or “not x in y”
...
112
They always give the same result.
In fact, not 'ham' in 'spam and eggs' appears to be special...
break out of if and foreach
...defines how many loop structures it should break. Example:
foreach (array('1','2','3') as $a) {
echo "$a ";
foreach (array('3','2','1') as $b) {
echo "$b ";
if ($a == $b) {
break 2; // this will break both foreach loops
}
}
echo ". "; // never r...
Set value of hidden input with jquery
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130
You should use val instead of value.
<script type="text/javascript" language="javascript"&...
ALTER TABLE, set null in not null column, PostgreSQL 9.1
...P NOT NULL;
More details in the manual: http://www.postgresql.org/docs/9.1/static/sql-altertable.html
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regex for zip-code
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316
^\d{5}(?:[-\s]\d{4})?$
^ = Start of the string.
\d{5} = Match 5 digits (for condition 1, 2, ...
How to calculate time in hours between two dates in iOS
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171
The NSDate function timeIntervalSinceDate: will give you the difference of two dates in second...
In Ruby how do I generate a long string of repeated text?
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310
str = "0" * 999999
...
Add st, nd, rd and th (ordinal) suffix to a number
...ate a string of text based on a current day. So, for example, if it is day 1 then I would like my code to generate = "Its the 1* st *".
...