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Can I Replace Apache with Node.js?
...n completely replace all your PHP with JavaScript code. This might be the happy medium: do your WebSockets work in Node.js, more mundane work in Apache + PHP.
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C# code to validate email address
...nternally:
const string pattern = @"^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x...
Split (explode) pandas dataframe string entry to separate rows
...row['var2'], row['var1'].split(','))
for _, row in a.iterrows()]).reset_index()
Out[55]:
index 0
0 a 1
1 b 1
2 c 1
3 d 2
4 e 2
5 f 2
Then you just have to rename the columns
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Maximum number of records in a MySQL database table
...tables or partitioning and put old data in old tables by year such as users_2011_jan, users_2011_feb or use numbers for the month. Then change your programming to work with this model. Maybe make a new table with less information to summarize the data in less columns and then only refer to the bigge...
How to use QueryPerformanceCounter?
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#include <windows.h>
double PCFreq = 0.0;
__int64 CounterStart = 0;
void StartCounter()
{
LARGE_INTEGER li;
if(!QueryPerformanceFrequency(&li))
cout << "QueryPerformanceFrequency failed!\n";
PCFreq = double(li.QuadPart)/1000.0;
QueryP...
Bash script and /bin/bash^M: bad interpreter: No such file or directory [duplicate]
...favourite answer. Nothing else worked this easily.
– App Dev Guy
Dec 1 '17 at 12:08
1
It worked. ...
LinkedIn联合创始人：初创企业早期别花钱买用户 - 资讯 - 清泛网 - 专注C/C...
...。比如Facebook，如此成功的公司，还收购了Instagram和WhatsApp。它为什么这样做？因为随着它的用户年龄的增长，越来越多它的用户开始倾向于使用Instagram和WhatsApp。现在许多年轻人都不用Facebook，觉得它不酷，因为他们的父母也在...
When to use IMG vs. CSS background-image?
...ertical centering problems - bring on Flexbox!
– Dean_Wilson
Nov 17 '14 at 2:18
3
@BinaryFunt - &...
How to print the full NumPy array, without truncation?
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Use numpy.set_printoptions:
import sys
import numpy
numpy.set_printoptions(threshold=sys.maxsize)
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How does Google's Page Speed lossless image compression work?
...lly interested in the technical details, check out the source code:
png_optimizer.cc
jpeg_optimizer.cc
webp_optimizer.cc
For PNG files, they use OptiPNG with some trial-and-error approach
// we use these four combinations because different images seem to benefit from
// different parameters...