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What does cmd /C mean? [closed]
I can understand cmd but not cmd /c . I was trying to invoke a java program from the current for which I use Runtime.getRuntime().exec("cmd /C java helloworld"); There arises my doubt.
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The split() method in Java does not work on a dot (.) [duplicate]
....String.split splits on regular expressions, and . in a regular expression means "any character".
Try temp.split("\\.").
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What does -z mean in Bash? [duplicate]
I'm looking at the following code:
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What does %>% mean in R [duplicate]
I am following this example, the server.R , file is here .
1 Answer
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What do {curly braces} around javascript variable name mean [duplicate]
EDIT
After looking at JSHint I found this ' destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz) and this however after reading it I still don't understand why it is used
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How to check which locks are held on a table
...to add comment from @MikeBlandford:
The blocked column indicates the spid of the blocking process. You can run kill {spid} to fix it.
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VC MFC工具栏(CToolBar)控件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...nd* pParentWnd,//按钮的父窗口(按钮属于哪个窗口）
UINT nID//指明按钮控件ID号
);
这个函数的第二个参数dwStyle是按钮控件的样式，也就是在可视化添加按钮控件时，右击按钮控件，选择属性，之后会弹出一个对话框，这个对...
Cannot pass null argument when using type hinting
...e writer of NullFoo to override abstract methods, even though they have no meaning (by definition of null).
– TheOperator
Nov 9 '16 at 8:57
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In Hibernate Validator 4.1+, what is the difference between @NotNull, @NotEmpty, and @NotBlank?
...ecks whether the value is not null nor empty, trimming the value first. It means that, it won’t allow just empty spaces.
So, if you want to validate that a field is not null but also that it doesn’t has just empty spaces, but text, you should use @NotBlank.
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