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Which @NotNull Java annotation should I use?
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package javax.annotation;
@TypeQualifierNickname
@Nonnull(when = When.UNKNOWN)
@Retention(RUNTIME)
public @interface Nullable {}
package org.checkerframework.checker.nullness.qual;
@Retention(RUNTIME)
@Target({TYPE_USE, TYPE_PARAMETER})
@SubtypeOf({})
@ImplicitFor(
literals = {LiteralKind....
What does $_ mean in PowerShell?
...erty -Name Bar -Value $_.Name -PassThru | Select Bar ... Well, it can work if you have a $_ in the scope where you're executing that pipeline. But that's very different from what you usually mean when trying to write something like that.
– Joey
Nov 6 '15 at 17:...
Visual Studio immediate window command for Clear All
...text-menu, L.
If you don't have a context-menu key on your keyboard (you know, the one between right-alt and right-ctrl), you can use shift + F10 instead.
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理解Python的 with 语句 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ese are useful in exception handling. Let’s see how this works by modifying the above example.
正如你看到的， 1. __enter__()方法被执行 2. __enter__()方法返回的值 - 这个例子中是"Foo"，赋值给变量'sample' 3. 执行代码块，打印变量"sample"的值为 "Foo" 4. _...
Why doesn't list have safe “get” method like dictionary?
...ection (values are associated with names) where it is inefficient to check if a key is present (and return its value) without throwing an exception, while it is super trivial to avoid exceptions accessing list elements (as the len method is very fast). The .get method allows you to query the value ...
Can I list-initialize a vector of move-only type?
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Now, I guess this should not be left without being mentioned in a comment :) move_only m[] = { move_only(), move_only(), move_only() }; std::vector<move_only> v(std::make_move_iterator(m), std::make_move_iterator(m + 3)...
import module from string variable
... on a documentation (personal) for nested matplotlib (MPL) library, which differs from MPL own provided, by interested submodule packages. I'm writing Python script which I hope will automate document generation from future MPL releases.
I selected interested submodules/packages and want to list t...
Is there a W3C valid way to disable autocomplete in a HTML form?
...atically turns off autocompletion (as do some other browsers, as far as I know).
Update
As this answer still gets quite a few upvotes, I just wanted to point out that in HTML5, you can use the 'autocomplete' attribute on your form element. See the documentation on W3C for it.
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What is context in _.each(list, iterator, [context])?
...which is represented by this since we passed it as the context parameter.
If you do not set the context, then this will refer to the window object.
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What's the difference between :: (double colon) and -> (arrow) in PHP?
There are two distinct ways to access methods in PHP, but what's the difference?
6 Answers
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