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Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
...inging] I'm late / I'm late / For a very important date. / No time to say "Hello." / Goodbye. / I'm late, I'm late, I'm late.
— Alice in Wonderland (Disney version, 1951)
You know when the constructor will be called (at the object declaration), and you know when its corresponding destructor...
How do JavaScript closures work?
...corn = { /* ... */ },
dragons = [ /* ... */ ],
squirrel = "Hello!";
/* ... */
But she would always have to return back to her dull world of chores and grown-ups.
return {
And she would often tell them of her latest amazing adventure as a princess.
story: functi...
Why do we copy then move?
...at would make it impossible to pass lvalues, such as in:
std::string s = "Hello";
S obj(s); // s is an lvalue, this won't compile!
If S only had a constructor that accepts rvalues, the above would not compile.
Won't a copy be expensive, especially given something like std::string?
If you pa...
Why do I have to access template base class members through the this pointer?
... qualified. Inside of Foo, you'd have to write:
typename std::string s = "hello, world";
because std::string would be a dependent name, and hence assumed to be a non-type unless specified otherwise. Ouch!
A second problem with allowing your preferred code (return x;) is that even if Bar is defin...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...on, length of string )
实例：
$ awk '{ print substr( "hello world", 7,11 ) }'
上例截取了world子字符串。
match函数返回在字符串中正则表达式位置的索引，如果找不到指定的正则表达式则返回0。match函数会设置内建变量RSTART...
How many GCC optimization levels are there?
...86-64'
/usr/local/libexec/gcc/x86_64-unknown-linux-gnu/5.1.0/cc1 [[noise]] hello_world.c -O100 -o /tmp/ccetECB5.
so -O was forwarded to both cc1 and collect2.
O in common.opt
common.opt is a GCC specific CLI option description format described in the internals documentation and translated to C by o...
How can I reliably determine the type of a variable that is declared using var at design time?
...hat statement. For example, suppose you have the method body:
String x = "hello";
var y = x.ToCharArray();
var z = from foo in y where foo.
and now we need to work out that foo is of type char. We build a database that has all the metadata, extension methods, source code types, and so on. We bui...
Most simple but complete CMake example
...le but complete CMakeLists.txt files sample.
Source Code
Tutorials from hello world to cross platform Android/iOS/Web/Desktop.
Each platform I released a sample application.
The 08-cross_platform file struct is verified by my work
It may be not perfect but useful & best practice for a team on...
How exactly does the callstack work?
...eat deal on the architecture and ABI. There are quite a few architectures (hello Itanium) where the whole thing is.. more interesting (and there are things like variable sized argument lists!)
– Voo
Jun 2 '14 at 0:37
...
In Python, how do I determine if an object is iterable?
...
Note that in Python 3: hasattr(u"hello", '__iter__') returns True
– Carlos
Apr 21 '14 at 2:27
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