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Benchmarking (python vs. c++ using BLAS) and (numpy)
...e python for my program, what could I do to increase the performance when calling BLAS or LAPACK routines?
Make sure that numpy uses optimized version of BLAS/LAPACK libraries on your system.
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g++ undefined reference to typeinfo
...ill contain null-pointer most likely). However, nobody prohibits you from calling this pure virtual function in a non-virtual manner, i.e. by using a fully-qualified name. In this case the linker will look for the body, and you will have to define the function. And yes, you can define a body for a p...
C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...endencies on MFC and can also be used in a console application.
First of all to call a script it is important to know that VBScript and JScript deal only with VARIANT parameters. This is the reason I created the CSafeArrayHelper class. The CSafeArray helper wrapper class allows you to create param...
GDB missing in OS X v10.9 (Mavericks)
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I installed via brew, and keep getting "_____: not in executable format: File format not recognized" when I try to load an executable. Can anyone comment on how they got a successful install?
– Parker
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How to convert array values to lowercase in PHP?
How can I convert all values in an array to lowercase in PHP?
10 Answers
10
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What is the difference between partitioning and bucketing a table in Hive ?
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Partitioning data is often used for distributing load horizontally, this has performance benefit, and helps in organizing data in a logical fashion. Example: if we are dealing with a large employee table and often run queries with WHERE clauses that restrict the results to a particular ...
Find out whether Chrome console is open
... answer. This solution takes advantage of the fact that toString() is not called on logged objects unless the console is open.
var devtools = /./;
devtools.toString = function() {
if (!this.opened) {
alert("Opened");
}
this.opened = true;
}
console.log('%c', devtools);
// devtools.ope...
Node: log in a file instead of the console
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Due to a recent change, you can't call stderr.pipe() anymore - it takes this now: process.__defineGetter__('stderr', function() { return fs.createWriteStream(__dirname + '/error.log', {flags:'a'}) })
– damianb
Feb 23 '13 ...
Programmatically find the number of cores on a machine
...ne, if a system is capable of turning some off they might not be counted. Calling sysconf with "_SC_NPROCESSORS_CONF" will return the total CPUs configured.
– Chris S
Apr 23 '11 at 18:43
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获取文件系统映像及恢复删除的数据（FAT文件系统格式描述） - C/C++ - 清泛...
...iGetClassDevs(&CLSID_DeviceInstance, NULL, NULL, DIGCF_PRESENT); //getting all devices with a removable disk guid
if ( INVALID_HANDLE_VALUE == hDevInfo )
{
return devInfos;//exit if there are no devices
}
try
{
st...