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Pip freeze vs. pip list
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111
When you are using a virtualenv, you can specify a requirements.txt file to install all the de...
Inline labels in Matplotlib
...
mask = (xy[:,0] >= 0) & (xy[:,0] < N) & (xy[:,1] >= 0) & (xy[:,1] < N)
xy = xy[mask]
# add to pop
for p in xy:
pop[l][tuple(p)] = 1.0
# find whitespace, nice place for labels
ws = 1.0 - (np.sum(pop, axis=0) > 0) *...
Five equal columns in twitter bootstrap
...nd how the 5 column grid is being used here:
http://web.archive.org/web/20120416024539/http://domain7.com/mobile/tools/bootstrap/responsive
...
fork() branches more than expected?
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answered Jun 21 '12 at 6:58
wallykwallyk
52.3k1111 gold badges7373 silver badges130130 bronze badges
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Creating Multifield Indexes in Mongoose / MongoDB
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194
You call the index method on your Schema object to do that as shown here. For your case it wo...
Regular expressions in C: examples?
...s):
#include <regex.h>
regex_t regex;
int reti;
char msgbuf[100];
/* Compile regular expression */
reti = regcomp(&regex, "^a[[:alnum:]]", 0);
if (reti) {
fprintf(stderr, "Could not compile regex\n");
exit(1);
}
/* Execute regular expression */
reti = regexec(&regex,...
Python - abs vs fabs
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127
math.fabs() converts its argument to float if it can (if it can't, it throws an exception). It...
Catching error codes in a shell pipe
...e simple version of that is:
tmp=${TMPDIR:-/tmp}/mine.$$
if ./a > $tmp.1
then
if ./b <$tmp.1 >$tmp.2
then
if ./c <$tmp.2
then : OK
else echo "./c failed" 1>&2
fi
else echo "./b failed" 1>&2
fi
else echo "./a failed" 1>&...
Multi-line commands in GHCi
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187
Most of the time, you can rely on type inference to work out a signature for you. In your exam...