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Why can't I forward-declare a class in a namespace using double colons?
... r s t u v w x y z
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z _
digit: one of
0 1 2 3 4 5 6 7 8 9
Which is the production of the common scheme [a-zA-Z_][a-zA-Z0-9_]* we are all familiar with. As you can see, this precludes class foo::bar; from being a valid forward declaration, bec...
ListCtrl 重绘（Custom Draw） - C/C++ - 清泛网 - 专注C/C++及内核技术
...er Draw等）。这种容易来自于我们只需要处理一个消息（NM_CUSTOMDRAW），就可以让Windows为你干活了，你就不用被逼去处理＂重绘过程＂中所有的脏活了。
这篇文章的焦点是如何在一个LISTCTRL控件上使用Custom Draw消息。究其原因，一...
Finding sum of elements in Swift array
...parameter:
extension Sequence {
func sum<T: AdditiveArithmetic>(_ keyPath: KeyPath<Element, T>) -> T { reduce(.zero) { $0 + $1[keyPath: keyPath] } }
}
Usage:
struct Product {
let id: String
let price: Decimal
}
let products: [Product] = [.init(id: "abc", price: 21.9),
...
What is the relationship between UIView's setNeedsLayout, layoutIfNeeded and layoutSubviews?
...tion might look something like this:
-(void)layoutIfNeeded {
if (self._needsLayout) {
UIView *sv = self.superview;
if (sv._needsLayout) {
[sv layoutIfNeeded];
} else {
[self layoutSubviews];
}
}
}
You would call layoutIfNeeded on a v...
How to count objects in PowerShell?
...
Another option: get-alias | measure | % { $_.Count }
– Shameer
Oct 2 '15 at 19:38
fyi:...
Unzip All Files In A Directory
...s the .zip file:
find -name '*.zip' -exec sh -c 'unzip -d "${1%.*}" "$1"' _ {} \;
This is an extension of @phatmanace's answer and addresses @RishabhAgrahari's comment:
This will extract all the zip files in current directory, what if I want the zip files (present in subfolders) to be extract...
How do you execute an arbitrary native command from a string?
...'MyApp'
$apps= @{}
Get-ChildItem $path |
Where-Object -FilterScript {$_.getvalue('DisplayName') -like $app} |
ForEach-Object -process {$apps.Set_Item(
$_.getvalue('UninstallString'),
$_.getvalue('DisplayName'))
}
foreach ($uninstall_string in $apps.GetEnumerator()) {
...
Using msbuild to execute a File System Publish Profile
...ination)" />
<ItemGroup>
<PublishFiles Include="$(_PackageTempDir)\**\*.*" />
</ItemGroup>
<Copy SourceFiles="@(PublishFiles)"
DestinationFiles="@(PublishFiles->'$(PublishDestination)\%(RecursiveDir)%(Filename)%(Extension)')"
SkipU...
What is the size of ActionBar in pixels?
...
Thank you. I was trying to use @dimen/abc_action_bar_default_height directly (ActionBarComapt) and it worked (on mdpi device). But trying to get this value on Samsung Galaxy SIII returned me wrong value. That is because values-xlarge (somehow) is more preferred than...
Change values while iterating
...", ""},
&Attribute{"bar", ""},
}}
for _, attr := range n.Attr {
if attr.Key == "href" {
attr.Val = "something"
}
}
for _, v := range n.Attr {
fmt.Printf("%#v\n", *v)
...