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Is it better to use std::memcpy() or std::copy() in terms to performance?
...ll have a slight, almost imperceptible performance loss. I just did a test and found that to be untrue: I did notice a performance difference. However, the winner was std::copy.
I wrote a C++ SHA-2 implementation. In my test, I hash 5 strings using all four SHA-2 versions (224, 256, 384, 512), and ...
How to clear the canvas for redrawing
After experimenting with composite operations and drawing images on the canvas I'm now trying to remove images and compositing. How do I do this?
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What is the difference between Reader and InputStream?
What is the difference between Reader and InputStream?
And when to use what?
If I can use Reader for reading characters why I will use inputstream, I guess to read objects?
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what is the basic difference between stack and queue?
What is the basic difference between stack and queue??
11 Answers
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What algorithm can be used for packing rectangles of different sizes into the smallest rectangle pos
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The quick and dirty first pass solution is always a great one to start with, as a comparison if nothing else.
Greedy placement from large to small.
Put the largest rectangle remaining into your packed area. If it can't fit anywhere, ...
How to ignore SVN folders in WinMerge?
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Try making a Filefilter
WinMerge handles this just fine. You want to create and use a Filter. Under Tools | Filters... | Filefilters, create a new filter or modify an existing one.
It will look like this:
## Ignore Java class and jar files
f: \.class$
f: \....
C# delete a folder and all files and folders within that folder
I'm trying to delete a folder and all files and folders within that folder, I'm using the code below and I get the error Folder is not empty , any suggestions on what I can do?
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NSIS内置路径命令详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...$STARTMENU=相对应用户名称的「开始」菜单；如：C:\Documents and Settings\Administrator\「开始」菜单!
$SMPROGRAMS=相对应用户名称的「开始」菜单\程序；如：C:\Documents and Settings\Administrator\「开始」菜单\程序
$QUICKLAUNCH=相对应用户名称...
How to optimize for-comprehensions and loops in Scala?
...imizer can eliminate the foreach but cannot yet eliminate the throw/catch. And throw/catch is expensive. But since such nested returns are rare in Scala programs, the optimizer did not yet address this case. There is work going on to improve the optimizer which hopefully will solve this issue soon.
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Versioning SQL Server database
....html. I choose not to put schema dumps in under version control as alumb and others suggest because I want an easy way to upgrade my production database.
For a web application where I'll have a single production database instance, I use two techniques:
Database Upgrade Scripts
A sequence databa...