大约有 40,000 项符合查询结果（耗时：0.0482秒） [XML]
Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...ion.immutable.BitSet = BitSet(1, 2, 3)
scala> val shifted = bits map { _ + 1 }
shifted: scala.collection.immutable.BitSet = BitSet(2, 3, 4)
scala> val displayed = bits map { _.toString + "!" }
displayed: scala.collection.immutable.Set[java.lang.String] = Set(1!, 2!, 3!)
See how you always ...
Use RSA private key to generate public key?
... compatible with OpenSSH. Append the public key to remote:~/.ssh/authorized_keys and you'll be good to go
docs from SSH-KEYGEN(1)
ssh-keygen -y [-f input_keyfile]
-y This option will read a private OpenSSH format file and print an OpenSSH public key to stdout.
...
为AppInventor2开发拓展(Extension) · App Inventor 2 中文网
...属性→高级系统设置→高级→环境变量
新建JAVA_HOME:如果是默认安装路径那么就在这个路径下：C:\Program Files\Java\jdk1.8.0_171
新建Classpath： .;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar
在Path后面新增：%JAVA_HOME%\bin;%JAVA_HOME%\...
C++ unordered_map using a custom class type as the key
I am trying to use a custom class as key for an unordered_map , like the following:
3 Answers
...
Best way to pretty print a hash
...
require 'pp'
pp my_hash
Use pp if you need a built-in solution and just want reasonable line breaks.
Use awesome_print if you can install a gem. (Depending on your users, you may wish to use the index:false option to turn off displaying arr...
What is the difference between buffer and cache memory in Linux?
...110207101856/http://www.linuxforums.org/articles/using-top-more-efficiently_89.html
share
|
improve this answer
|
follow
|
...
When should you branch?
...s the project? What are you supposed to do with it?
a branch called "bugfix_212" can be interpreted in the context of a bug tracking system for instance, and any developer can use it with at least some idea about what he is supposed to do with it)
A branch is not a tag (SVN is a Revision System whi...
How to dismiss keyboard iOS programmatically when pressing return
...s delegate to current viewcontroller and then:
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
Objective-C:
[self.view endEditing:YES];
or
Set text field's delegate to current viewcontroller and then:
- (BOOL)textFie...
The new keyword “auto”; When should it be used to declare a variable type? [duplicate]
... used.
Another place where auto can be used is when you use new1 or make_* functions , such as here:
//without auto. Not that good, looks cumbersome
SomeType<OtherType>::SomeOtherType * obj1 = new SomeType<OtherType>::SomeOtherType();
std::shared_ptr<XyzType> obj2 = std::make_s...
Provide an image for WhatsApp link sharing
...;meta property="og:image" content="//cdn.example.com/uploads/images/webpage_300x200.png">
* @RichDeBourke mentioned this to me, but apparently WhatsApp has increased its maximum image size (dimensions as well as file size). I did some tests: it does not work consistently every time on every devi...