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Why must a lambda expression be cast when supplied as a plain Delegate parameter
...c = Lambda<Func<int, string>>.Cast;
// Use
var f1 = c(x => x.ToString());
var f2 = c(x => "Hello!");
var f3 = c(x => (x + x).ToString());
}
}
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记录一些Mac OS X技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...nd / -name ".DS_Store" -delete
管理Dashboard里的widgets
按F4或fn-F12调出Dashboard，点左下角的+号，就可以添加和删除widgets了。
将Dashboard里的widget放在桌面。
先在终端输入如下代码：
defaults write com.apple.dashboard devmode YES
killall Dock
然...
What is a correct mime type for docx, pptx etc?
...e-delta-tree", "wg": "application/vnd.pmi.widget", "qxd": "application/vnd.quark.quarkxpress", "esf": "application/vnd.epson.esf", "msf": "application/vnd.epson.msf", "ssf": "application/vnd.epson.ssf", "qam": "application/vnd.epson.quickanime", "qfx": "application/vnd.intu.qfx", "qt": "video/quickt...
Fast Linux File Count for a large number of files
...owing performance numbers (in real clock time):
ls -1 | wc - 0:01.67
ls -f1 | wc - 0:00.14
find | wc - 0:00.22
dircnt | wc - 0:00.04
That last one, dircnt, is the program compiled from the above source.
EDIT 2016-09-26
Due to popular demand, I've re-written this program to be recursive, so i...
What is the curiously recurring template pattern (CRTP)?
...u aim to do with virtual methods.
http://coliru.stacked-crooked.com/a/2d27f1e09d567d0e
template <typename T>
struct Base {
void foo() {
(static_cast<T*>(this))->foo();
}
};
struct Derived : public Base<Derived> {
void foo() {
cout << "derived foo" <<...
Why don't C++ compilers define operator== and operator!=?
...omparison, if the programmer wanted a pointer comparison, he'd write (&f1 == &f2)
– Viktor Sehr
Sep 1 '10 at 9:07
63
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How to display gpg key details without importing it?
...ying to guess what you mean ...
pub rsa8192 2012-12-25 [SC]
0D69E11F12BDBA077B3726AB4E1F799AA4FF2279
uid Jens Erat (born 1988-01-19 in Stuttgart, Germany)
uid Jens Erat <jens.erat@fsfe.org>
uid Jens Erat <jens.erat@uni-konstanz.de>
uid Jens...
show all tags in git log
...) ISP-141/ISP-143/ISP-144: Fixing a bug with the creation of the logs
e1513f1 (tag: refs/tags/0.1.0) ISP-141/ISP-143: Betterr refactoring of the Loggers, no dependencies, self-configuration for missing settings.
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Is it a bad practice to use negative margins in Android?
..._parent"
android:layout_height="wrap_content"
android:background="#F1B36D"
android:padding="30dp"
android:text="I'm below"
android:textColor="#ffffff"
android:textSize="48sp"
android:textAlignment="center"
tools:layout_editor_absoluteX="129dp"
tools:layout_editor_...
The purpose of Model View Projection Matrix
...
Hi Tommy, can u suggest any sample code for pan functionality in Opengl Es2.0 in Android using this Model View Projection Matrix if Possible. I refereed more links, i could not get any clear idea.if any sample code means, its easy to understand for me..
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