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Sleep for milliseconds
...r usleep, which accepts microseconds:
#include <unistd.h>
unsigned int microseconds;
...
usleep(microseconds);
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How do I decode a base64 encoded string?
...
Simple:
byte[] data = Convert.FromBase64String(encodedString);
string decodedString = Encoding.UTF8.GetString(data);
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Difference between Dictionary and Hashtable [duplicate]
...htable objHashTable = new Hashtable();
objHashTable.Add(1, 100); // int
objHashTable.Add(2.99, 200); // float
objHashTable.Add('A', 300); // char
objHashTable.Add("4", 400); // string
lblDisplay1.Text = objHashTable[1].ToString();
lblDisplay2.Text = objHashTable[2.99].T...
Should try…catch go inside or outside a loop?
...ly no performance difference in where the try/catch structures are placed. Internally, they are implemented as a code-range table in a structure that is created when the method is called. While the method is executing, the try/catch structures are completely out of the picture unless a throw occurs,...
How to prevent line break at hyphens on all browsers
...re any other way to prevent line break? or does ckeditor have an option to convert the hyphen automatically? Thanks again
– Alan
Jan 6 '12 at 4:24
9
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Returning unique_ptr from functions
...the object were designated by an rvalue.
Just wanted to add one more point that returning by value should be the default choice here because a named value in the return statement in the worst case, i.e. without elisions in C++11, C++14 and C++17 is treated as an rvalue. So for example the follo...
Will using goto leak variables?
...abels).
1. Label scope
You can't jump across functions:
void f() {
int x = 0;
goto lol;
}
int main() {
f();
lol:
return 0;
}
// error: label 'lol' used but not defined
[n3290: 6.1/1]: [..] The scope of a label is the function in which
it appears. [..]
2. Object initiali...
What is a “context bound” in Scala?
... to Scala 2.7, tabulate could be
written as follows:
def tabulate[T](len: Int, f: Int => T) = {
val xs = new Array[T](len)
for (i <- 0 until len) xs(i) = f(i)
xs
}
In Scala 2.8 this is no longer possible, because runtime information is necessary to create the right representatio...
BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...区。
【例一】
用cl 编译两个小程序如下：
程序1:
int ar[30000];
void main()
{
......
}
程序2:
int ar[300000] = {1, 2, 3, 4, 5, 6 };
void main()
{
......
}
发现程序2 编译之后所得的.exe 文件比程序1 的要大得多。当下甚为不解，于...
Best way to require all files from a directory in ruby?
...ure will not be loaded if its name already appears in $". The file name is converted to an absolute path, so "require 'a'; require './a'" will not load a.rb twice. ruby-doc.org/core/classes/Kernel.html#M001418
– Derek
Jan 29 '11 at 17:47
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