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How to generate a random number between a and b in Ruby?
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UPDATE: Ruby 1.9.3 Kernel#rand also accepts ranges
rand(a..b)
http://www.rubyinside.com/ruby-1-9-3-introduction-and-changes-5428.html
Converting to array may be too expensive, and it's unnecessary.
(a..b).to_a.sample
Or
[*a..b].sample
Array#sample
Standard in Ruby 1.8.7+.
Note: was...
Is file append atomic in UNIX?
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Here is what the standard says: http://www.opengroup.org/onlinepubs/009695399/functions/pwrite.html.
If the O_APPEND flag of the file status flags is set, the file offset shall be set to the end of the file prior to each write and no intervening file modificat...
CMFCTabCtrl的使用、颜色样式调整 - C/C++ - 清泛网 - 专注C/C++及内核技术
...可以拖拽
m_wndTab.EnableTabSwap (FALSE);//不可拖拽
From：http://www.cnblogs.com/magic-cube/archive/2011/04/27/2029908.html
tsingfun.com补充：
设置AutoColor后的Tab效果如图：
MDI默认Tab样式改为上图效果的代码如下（MainFrm.cpp）：
//CMDITabInfo mdiTab...
Declaring abstract method in TypeScript
...e BaseAnimal class.
Paste this in here to see if it works for you: http://www.typescriptlang.org/Playground/
// The behavioral interface also needs to extend base for substitutability
interface AbstractAnimal extends BaseAnimal {
// encapsulates animal behaviors that must be implemented
ma...
Difference between BYTE and CHAR in column datatypes
...e space for less than 11 chars depending on the encoding.
See also http://www.joelonsoftware.com/articles/Unicode.html
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“VT-x is not available” when i start my Virtual machine [closed]
...Here you can find Hardware-Assisted Virtualization Detection Tool ( http://www.microsoft.com/downloads/en/details.aspx?FamilyID=0ee2a17f-8538-4619-8d1c-05d27e11adb2&displaylang=en) which will tell you if your hardware supports VT-x.
Alternatively you can find your processor here: http://ark.int...
How to write character & in android strings.xml
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You can find all the HTML Special Characters in this page http://www.degraeve.com/reference/specialcharacters.php Just replace the code where you want to put that character. :-)
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Best practices for circular shift (rotate) operations in C++
... MSVC-specific inline asm (which only works for 32bit x86 code), or http://www.devx.com/tips/Tip/14043 for a C version. The comments are replying to that.)
Inline asm defeats many optimizations, especially MSVC-style because it forces inputs to be stored/reloaded. A carefully-written GNU C inline...
Why does SIGPIPE exist?
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https://www.gnu.org/software/libc/manual/html_mono/libc.html
This link says:
A pipe or FIFO has to be open at both ends simultaneously. If you read from a pipe or FIFO file that doesn't have any processes writing to it (perhaps bec...
How to get the URL without any parameters in JavaScript?
... It's missing port, so this will return incorrect result for page http://www.example.com:8080/asdf.html?foo=bar
– izogfif
Aug 17 '18 at 15:00
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