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How do I read / convert an InputStream into a String in Java?
If you have a java.io.InputStream object, how should you process that object and produce a String ?
59 Answers
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In Git, how do I figure out what my current revision is?
...commit with a version number and then use
$ git describe --tags
to identify the current HEAD w.r.t. any tags. If you mean you want to know the hash of the current HEAD, you probably want:
$ git rev-parse HEAD
or for the short revision hash:
$ git rev-parse --short HEAD
It is often sufficie...
How to make a HTTP request using Ruby on Rails?
...nt the wheel, and you benefit from the hard work others have already done. If a gem exists that makes your life easier, there's generally no good reason not to use it.
– Marnen Laibow-Koser
Apr 10 '18 at 22:27
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How to add text at the end of each line in Vim?
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This will do it to every line in the file:
:%s/$/,/
If you want to do a subset of lines instead of the whole file, you can specify them in place of the %.
One way is to do a visual select and then type the :. It will fill in :'<,'> for you, then you type the rest of it ...
How to create an array of 20 random bytes?
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If you want a cryptographically strong random number generator (also thread safe) without using a third party API, you can use SecureRandom.
Java 6 & 7:
SecureRandom random = new SecureRandom();
byte[] bytes = new byte[...
Create a custom event in Java
...ic void sayHello() {
System.out.println("Hello!!");
// Notify everybody that may be interested.
for (HelloListener hl : listeners)
hl.someoneSaidHello();
}
}
// Someone interested in "Hello" events
class Responder implements HelloListener {
@Override
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Is it possible to search for a particular filename on GitHub?
...hey changed that. It's a general issue for code search, not just those specific searches.
– Orangenhain
Sep 6 '16 at 20:37
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App Inventor 俄罗斯方块：画布实现的完整小游戏（附 .aia 源码） · App Inventor 2 中文网
...hen 画布_棋盘.Flung(x, y, speed, heading, xvel, yvel, flungSprite) {
if abs(heading) = 135 {
标签_状态.Text = "左滑"
} else if heading < 0 {
标签_状态.Text = "下滑"
} else {
标签_状态.Text = "上滑"
}
}
常见问题
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Uninstall old versions of Ruby gems
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Way to clean out any old versions of gems.
sudo gem cleanup
If you just want to see a list of what would be removed you can use:
sudo gem cleanup -d
You can also cleanup just a specific gem by specifying its name:
sudo gem cleanup gemname
for remove specific version like 1.1.9 o...
Packing NuGet projects compiled in release mode?
... of Release to a default pulled from a project setting that can only be modified in the project file directly (no VS GUI option). To avoid the command-line property tweak for all future nuget pack calls, edit the project file XML in your favorite text editor.
– patridge
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