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What does $_ mean in PowerShell?
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1,2,3 | %{ write-host $PSItem }
For example in the above code the %{} block is called for every value in the array. The $_ or $PSItem variable will contain the current value.
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JavaScript to scroll long page to DIV
...document.getElementById('#something').scrollIntoView({ behavior: 'smooth', block: 'center' });
– Khalil Laleh
Nov 20 '18 at 9:33
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C multi-line macro: do/while(0) vs scope block [duplicate]
I've seen some multi-line C macros that are wrapped inside a do/while(0) loop like:
1 Answer
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Async Procedures 拓展：异步任务拓展，异步处理耗时任务 - App Inventor 2...
...ndroid System thinking that your app crashed while doing intense processes.BLOCKS:EVENTS :
[color=var(--tertiary)][color=var(--secondary)]Capture[color=var(--secondary-high)]352×100 4.28 KB
FUNCTIONS :
[color=var(--tertiary)][color=var(--secondary)]Capture[color=var(--secondary-high)]368×539 ...
【解决】Argument (package note-current-block, Unknown, version 0.0) to...
原因：
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解决方法：
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Understanding prototypal inheritance in JavaScript
...avaScript OOP. Can you please explain the difference between the following blocks of code? I tested and both blocks work. What's the best practice and why?
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Center image horizontally within a div
...llowing:
So, translating, perhaps:
#artiststhumbnail a img {
display:block;
margin:auto;
}
Here's my solution in: http://jsfiddle.net/marvo/3k3CC/2/
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top nav bar blocking top content of the page
...narrower screen or simply resizes the window? The topmost contents will be blocked again by the expanded nav bar section.
– Konrad Viltersten
Apr 21 '16 at 11:41
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Can you supply arguments to the map(&:method) syntax in Ruby?
...e a simple patch on Symbol like this:
class Symbol
def with(*args, &block)
->(caller, *rest) { caller.send(self, *rest, *args, &block) }
end
end
Which will enable you to do not only this:
a = [1,3,5,7,9]
a.map(&:+.with(2))
# => [3, 5, 7, 9, 11]
But also a lot of othe...
Pros and Cons of Interface constants [closed]
PHP interfaces allow the definition of constants in an interface, e.g.
2 Answers
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