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ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
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This works but @Amt87 's answer will make sure you have keytool available in any directory without having to first cd to the directory where keytool is located (windows only). in OS X (Mac), edit your .profile and be sure to include :$PATH at ...
converting double to integer in java
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Is there a difference between copy initialization and direct initialization?
...tion
While they look identical and are supposed to do the same, these two forms are remarkably different in certain cases. The two forms of initialization are direct and copy initialization:
T t(x);
T t = x;
There is behavior we can attribute to each of them:
Direct initialization behaves like...
What does auto do in margin:0 auto?
... answered Jul 3 '10 at 8:05
djdd87djdd87
60.7k2424 gold badges144144 silver badges190190 bronze badges
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Is < faster than
...r the
execution core to complete the execution of all of the μops that form
an instruction.
Throughput — The number of clock cycles required to
wait before the issue ports are free to accept the same instruction
again. For many instructions, the throughput of an instruction can be...
Build unsigned APK file with Android Studio
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96
The easiest way, I guess:
Open Gradle tab on the right side
Double click YourProject/:app...
Generate random string/characters in JavaScript
.../sad-tragedy-of-microoptimization or sitepen.com/blog/2008/05/09/string-performance-an-analysis etc. Also, this question involves only 5 concatenations.
– Alex Reece
May 7 '13 at 22:34
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Run a Docker image as a container
...CREATED SIZE
ubuntu 12.04 8dbd9e392a96 4 months ago 131.5 MB (virtual 131.5 MB)
With a name (let's use Ubuntu):
$ docker run -i -t ubuntu:12.04 /bin/bash
Without a name, just using the ID:
$ docker run -i -t 8dbd9e392a96 /bin/bash
Please s...
How to create directory automatically on SD card
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Lenin Raj Rajasekaran
20.1k1212 gold badges8787 silver badges126126 bronze badges
answered Sep 16 '11 at 2:04
A B Vijay KumarA B Vijay Kumar
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Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
... -0.15 -0.15 -0.15
two 2.0 1.42 0.63 0.98 1.20 1.42 1.65 1.87
To get specific statistics, just select them,
df.groupby(['A', 'B'])['C'].describe()[['count', 'mean']]
count mean
A B
bar one 1.0 0.400157
three 1.0 2.240893
two ...