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Test whether a glob has any matches in bash
...onciseness and minimizing potential side effects.
UPDATE: Example usage requested.
if compgen -G "/tmp/someFiles*" > /dev/null; then
echo "Some files exist."
fi
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How do I convert a string to a lower case representation?
... Unfortunately, I'm not sure. You could try asking a separate question about that and linking it here?
– Ryan Endacott
Apr 3 '17 at 20:19
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Adding HTML entities using CSS content
...lin Further, to avoid characters being interpreted as part of the escape sequence reliably, add standard white-space: '>\a0 bc' is displayed > bc.
– PointedEars
Dec 21 '11 at 19:41
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How to use NSURLConnection to connect with SSL for an untrusted cert?
...pace *)protectionSpace {
return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
if ([challenge.protectionSpace.authentica...
How do you round a floating point number in Perl?
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Output of perldoc -q round
Does Perl have a round() function? What about ceil() and floor()?
Trig functions?
Remember that int() merely truncates toward 0. For rounding to a certain number of digits, sprintf() or printf() is usually the ea...
Mockito - difference between doReturn() and when()
...cs of Mockito, I have found that the methods doReturn(...).when(...) is equivalent to when(...).thenReturn(...) . So, my question is what is the point of having two methods that do the same thing or what is the subtle difference between doReturn(...).when(...) and when(...).thenReturn(...) ?
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How to write LaTeX in IPython Notebook?
... LaTeX inside html/markdown. Just put your LaTeX math inside $$.
$$c = \sqrt{a^2 + b^2}$$
Or you can display LaTeX / Math output from Python, as seen towards the end of the notebook tour:
from IPython.display import display, Math, Latex
display(Math(r'F(k) = \int_{-\infty}^{\infty} f(x) e^{2\...
Is there a simple way to convert C++ enum to string?
...
QT is able to pull that of (thanks to the meta object compiler):
QNetworkReply::NetworkError error;
error = fetchStuff();
if (error != QNetworkReply::NoError) {
QString errorValue;
QMetaObject meta = QNetworkReply...
Check if application is on its first run [duplicate]
... answered Aug 27 '11 at 22:38
SquonkSquonk
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In Perl, how can I read an entire file into a string?
...handle. See How can I read in an entire file all at once?, or
$ perldoc -q "entire file"
See Variables related to filehandles in perldoc perlvar and perldoc -f local.
Incidentally, if you can put your script on the server, you can have all the modules you want. See How do I keep my own module/li...