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Search and Replace with RegEx components in Atom editor
...stuff on it before replacing? For example, if $1 captures a number group - 123, replace it by adding 1 to it, something like eval($1+1)..?
– SexyBeast
Feb 22 '15 at 0:35
7
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二维码生成使用指导 · App Inventor 2 中文网
...rateQRCode(文本输入框1.Text, 垂直布局1)
}
输入 https://www.fun123.cn 点按钮，布局里出现二维码，用手机扫一扫就能打开网址。
案例一：手机名片二维码
用 MECARD 格式，扫码后手机会提示「添加联系人」：
when 按...
How do short URLs services work?
... How do they handle url parameters? For example www.digg.com?filter=123
– Ronen
Aug 12 '18 at 7:44
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How do I return multiple values from a function in C?
...
123
I don't know what your string is, but I'm going to assume that it manages its own memory.
You...
Dynamically select data frame columns using $ and a character value
...is a reproducible example below:
# set seed for reproducibility
set.seed(123)
df <- data.frame( col1 = sample(5,10,repl=T) , col2 = sample(5,10,repl=T) , col3 = sample(5,10,repl=T) )
# We want to sort by 'col3' then by 'col1'
sort_list <- c("col3","col1")
# Use 'do.call' to call order. S...
Base64 encoding and decoding in client-side Javascript
...=s.length;
var A="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
for(i=0;i<64;i++){e[A.charAt(i)]=i;}
for(x=0;x<L;x++){
c=e[s.charAt(x)];b=(b<<6)+c;l+=6;
while(l>=8){((a=(b>>>(l-=8))&0xff)||(x<(L-2)))&&(r+=w(a));}...
How do you check in python whether a string contains only numbers?
...
Use str.isdigit:
>>> "12345".isdigit()
True
>>> "12345a".isdigit()
False
>>>
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Format decimal for percentage values?
...complete example:
using System.Globalization;
...
decimal myValue = -0.123m;
NumberFormatInfo percentageFormat = new NumberFormatInfo { PercentPositivePattern = 1, PercentNegativePattern = 1 };
string formattedValue = myValue.ToString("P2", percentageFormat); // "-12.30%" (in en-us)
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Ruby combining an array into one string
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what if you were joining digits? [1,2,3] => 123?
– stevenspiel
Dec 9 '13 at 19:08
3
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How to add Web API to an existing ASP.NET MVC 4 Web Application project?
....Routing, System.Web.Net and System.Net.Http?
– gabed123
Mar 7 '19 at 23:04
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