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How does BLAS get such extreme performance?
...t makes use of some multiprocessor architecture with shared memory.
Level 3 functions are operations like the matrix-matrix product. Again you could implement them in terms of Level2 functions. But Level3 functions perform O(N^3) operations on O(N^2) data. So if your platform has a cache hierarc...
Is std::vector so much slower than plain arrays?
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Using the following:
g++ -O3 Time.cpp -I <MyBoost>
./a.out
UseArray completed in 2.196 seconds
UseVector completed in 4.412 seconds
UseVectorPushBack completed in 8.017 seconds
The whole thing completed in 14.626 seconds
So array is...
Configure WAMP server to send email
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Wesley MurchWesley Murch
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ggplot with 2 y axes on each side and different scales
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M--
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answered Jun 25 '10 at 10:40
AndreasAndreas
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Check if a String contains numbers Java
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233
try this
str.matches(".*\\d.*");
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Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
...版实例
来源：http://www.cnblogs.com/makemelaugh/archive/2008/11/06/1327960.html
创建一个项目ExcelRTD，添加Microsoft.Office.Interop.Excel引用。创建一个类MarketData.cs，这个类继承IRtdServer接口，以实现一个RTD Server。新建另一个类DataCollector.cs用于从...
How to document class attributes in Python? [closed]
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3 Answers
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Listing all permutations of a string/integer
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I found the pseudocode on http://www.programmersheaven.com/mb/Algorithms/369713/369713/permutation-algorithm-help/:
makePermutations(permutation) {
if (length permutation < required length) {
for (i = min digit to max digit) {
if (i not in permutation) {
makePermutations(per...
Hidden Features of C#? [closed]
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Indenting #defines
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Pre-ANSI C preprocessor did not allow for space between the start of a line and the "#" characte...