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Current time in microseconds in java
...owMilli() {
return System.currentTimeMillis();
}
}
Following test produces fairly good results on my machine.
final Timer timer = new TimerImpl();
while (true) {
System.out.println(timer.nowNano());
System.out.println(timer.nowMilli());
}
The difference ...
Vertically align text next to an image?
...0x60">
<span style="">Works.</span>
</div>
Tested in FF3.
Now you can use flexbox for this type of layout.
.box {
display: flex;
align-items:center;
}
<div class="box">
<img src="https://placehold.it/60x60">
<span style="">W...
Looking for a 'cmake clean' command to clear up CMake output
...Making a distribution that cannot be configured, does not even do platform tests etc, is useless. Hence there does not exist 'distclean' target for cmake. cmake is required to exist on the machine of the end-user.
– Carlo Wood
Dec 10 '19 at 19:10
...
Is it secure to store passwords as environment variables (rather than as plain text) in config files
... deploying outside your immediate intranet/home network, and then only for testing purposes.
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Detect the Internet connection is offline?
...ole or the window.navigator.onLine property for the value changes. You can test it on this website as well.
Note however this quote from Mozilla Documentation:
In Chrome and Safari, if the browser is not able to connect to a local area network (LAN) or a router, it is offline; all other conditions ...
Python argparse command line flags without arguments
... robust at all, but it works if you need this done super quickly (e.g. for testing purposes). Definitely keep it away from production code.
– Jonathan Sudiaman
Apr 9 '17 at 19:14
...
Why are local variables not initialized in Java?
...ompiler understands that if check (but i m just doing this off memory, not tested).
– Chii
Jan 6 '09 at 9:52
6
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Convert two lists into a dictionary
...
In 64 bit Python 3.8.2 provided by Nix, on Ubuntu 16.04, ordered from fastest to slowest:
>>> min(timeit.repeat(lambda: dict(zip(keys, values))))
0.6695233230129816
>>> min(timeit.repeat(lambda: {k: v for k, v in zip(keys, values)}))
0.6941362579818815
>>> min(timeit.re...
Select rows of a matrix that meet a condition
...,'B'] == 5)]
aux = aux[which(Mat[aux,'C'] > 2)]
Mat[aux, ]
By testing the speed advantage with system.time, the which method is 10x faster than the subset method.
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phantomjs not waiting for “full” page load
....com/ariya/phantomjs/blob/master/examples/waitfor.js
*
* Wait until the test condition is true or a timeout occurs. Useful for waiting
* on a server response or for a ui change (fadeIn, etc.) to occur.
*
* @param testFx javascript condition that evaluates to a boolean,
* it can be passed in a...