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Fast Linux File Count for a large number of files
... over and over, to avoid cache-based data skew, and I got roughly the following performance numbers (in real clock time):
ls -1 | wc - 0:01.67
ls -f1 | wc - 0:00.14
find | wc - 0:00.22
dircnt | wc - 0:00.04
That last one, dircnt, is the program compiled from the above source.
EDIT 2016-09-26
...
Why would I ever use push_back instead of emplace_back?
...e old version for the sake of compatibility or discouraging (if not disallowing) use of certain features.
– Dan Albert
Jul 6 '13 at 10:37
6
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Simple C example of doing an HTTP POST and consuming the response
... separates the header from the body.
Here is a sample that takes the following command line arguments:
host
port
command (GET or POST)
path (not including the query data)
query data (put into the query string for GET and into the body for POST)
list of headers (Content-Length: is automatic if us...
JavaScript unit test tools for TDD
...actor and Karma be used together?
pros:
Uses node.js, so compatible with Win/OS X/Linux
Run tests from a browser or headless with PhantomJS
Run on multiple clients at once
Option to launch, capture, and automatically shut down browsers
Option to run server/clients on development computer or separa...
If strings are immutable in .NET, then why does Substring take O(n) time?
...sistent strategy that encourages reuse of most of the memory is also not a win; all you've done is made your garbage collector get slower because now it has to worry about handling interior pointers.
If the substring operations people typically did on strings were completely different, then it wou...
OS detecting makefile
... share a more complete example that both:
doesn't assume uname exists on Windows
also detects the processor
The CCFLAGS defined here aren't necessarily recommended or ideal; they're just what the project to which I was adding OS/CPU auto-detection happened to be using.
ifeq ($(OS),Windows_NT)
...
Apple Pay入华遇阻 只因BAT太受欢迎？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...，满减、交易抹零、抽奖等等。补贴的初衷却很明显，促使用户养成使用支付宝进行先行买单的习惯，同时刺激用户消费，为商户提升客流量。商户利用自身资源为支付宝培养用户习惯，支付宝通过补贴来提升商户销售额，看似...
Is there an easy way to check the .NET Framework version?
...or .NET 4.5+ (from official documentation):
using System;
using Microsoft.Win32;
...
private static void Get45or451FromRegistry()
{
using (RegistryKey ndpKey = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry32).OpenSubKey("SOFTWARE\\Microsoft\\NET Framework Setup\\N...
Recommended way to get hostname in Java
Which of the following is the best and most portable way to get the hostname of the current computer in Java?
11 Answers
...
What is the precise meaning of “ours” and “theirs” in git?
...ontributor's work on top of it").
For git-merge it's explain in the following way:
ours
This option forces conflicting hunks to be auto-resolved cleanly by favoring our version. Changes from the other tree that do not conflict with our side are reflected to the merge result. For a binary ...