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Foreign keys in mongo?
... Ben
44.3k3939 gold badges150150 silver badges203203 bronze badges
answered Sep 5 '13 at 13:23
ZAkyZAky
82255 silver badges191...
Java: Date from unix timestamp
...
user136036
5,61433 gold badges3232 silver badges3535 bronze badges
answered Jul 11 '14 at 17:49
michamicha
4...
What's the easiest way to escape HTML in Python?
...
Max Egger
322 bronze badges
answered Jun 30 '09 at 4:18
nosklonosklo
183k5252 gold badge...
Generate a heatmap in MatPlotLib using a scatter data set
...data
x = np.random.randn(1000)
y = np.random.randn(1000)
sigmas = [0, 16, 32, 64]
for ax, s in zip(axs.flatten(), sigmas):
if s == 0:
ax.plot(x, y, 'k.', markersize=5)
ax.set_title("Scatter plot")
else:
img, extent = myplot(x, y, s)
ax.imshow(img, extent=ext...
Overloading Macro on Number of Arguments
...
@Uroc327 Adding a 0-argument macro to the list is possible, see my answer.
– augurar
Jan 27 '14 at 0:59
7
...
Maximum call stack size exceeded error
...ay into a string using the following:
String.fromCharCode.apply(null, new Uint16Array(bytes))
bytes contained several million entries, which is too big to fit on the stack.
share
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improve this a...
Gson: Directly convert String to JsonObject (no POJO)
...
PurushothamPurushotham
3,3662323 silver badges3939 bronze badges
...
Principal component analysis in Python
...is 2 x 20. Dropping the primes,
d . Vt 2 principal vars = p.vars_pc( 20 vars )
U 1000 obs = p.pc_obs( 2 principal vars )
U . d . Vt 1000 obs, p.obs( 20 vars ) = pc_obs( vars_pc( vars ))
fast approximate A . vars, using the `npc` principal components
Ut ...
Sleep until a specific time/date
... correct number of seconds.
To do this in bash, do the following:
current_epoch=$(date +%s)
target_epoch=$(date -d '01/01/2010 12:00' +%s)
sleep_seconds=$(( $target_epoch - $current_epoch ))
sleep $sleep_seconds
To add precision down to nanoseconds (effectively more around milliseconds) use e....
Are Swift variables atomic?
...000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 4...