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Why is String.chars() a stream of ints in Java 8?
In Java 8, there is a new method String.chars() which returns a stream of int s ( IntStream ) that represent the character codes. I guess many people would expect a stream of char s here instead. What was the motivation to design the API this way?
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Method Overloading for null argument
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218
Java will always try to use the most specific applicable version of a method that's available (s...
How do I convert a byte array to Base64 in Java?
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Java 8+
Encode or decode byte arrays:
byte[] encoded = Base64.getEncoder().encode("Hello".getBytes());
println(new String(encoded)); // Outputs "SGVsbG8="
byte[] decoded = Base64.getDecoder().decode(encoded);
println(new String...
Sample random rows in dataframe
... df
X1 X2
1 0.7091409 -1.4061361
2 -1.1334614 -0.1973846
3 2.3343391 -0.4385071
4 -0.9040278 -0.6593677
5 0.4180331 -1.2592415
6 0.7572246 -0.5463655
7 -0.8996483 0.4231117
8 -1.0356774 -0.1640883
9 -0.3983045 0.7157506
10 -0.9060305 2.3234110
Then select some ro...
Why prefer two's complement over sign-and-magnitude for signed numbers?
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18 Answers
18
Active
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What is the way to quick-switch between tabs in Xcode 4
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edited May 28 '12 at 9:11
Ben Clayton
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How to sleep for five seconds in a batch file/cmd [duplicate]
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858
One hack is to (mis)use the ping command:
ping 127.0.0.1 -n 6 > nul
Explanation:
ping ...
What is the significance of ProjectTypeGuids tag in the visual studio project file
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{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC} is the GUID for C# project
{60dc8134-eba5-43b8-bcc9-bb4bc16c2548} is for project in WPF flavor package
So your ProjectTypeGuids is for a WPF C# project.
You could see the meaning of the different GUID in the register :
HKEY_LOCAL_MACHINE\SOFTWARE\Micro...
PhpStorm wrap/surround selection?
...e Surround With options dialog box will be displayed.
Update (for PhpStorm8)
For PhpStorm Version 8, tick on checkbox of Preferences -> Editor -> General -> Smart Keys -> Surround selection on typing quote or brace.
Update (for PhpStorm 2016)
For PhpStorm Version 2016, use Cmd + Alt ...