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How should I validate an e-mail address?
...\\-\\+]{1,256}" +
"\\@" +
"[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" +
"(" +
"\\." +
"[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" +
")+"
);
You can use function
private boolean checkEmail(String email) {
return EMAIL_ADDRESS_PATTERN.matcher(em...
Get User's Current Location / Coordinates
...LocationAlwaysUsageDescription
and your custom alert message like; AppName(Demo App) would like to use your current location.
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get UTC time in PHP
...rver system timezone is different. The only way i was able to get real UTC based timestamp was strtotime(gmdate("M d Y H:i:s")), which is different that gmdate("U"), when your server system timezone is different than UTC
– bksi
Feb 23 '16 at 19:29
...
LINGO使用指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...到30元，应否改变生产计划？
模型代码如下：
max=72*x1+64*x2;
x1+x2<=50;
12*x1+8*x2<=480;
3*x1<=100;
求解这个模型并做灵敏性分析，结果如下。
Global optimal solution found at iteration: 0
Objective value: 3360.0...
Remove rows with all or some NAs (missing values) in data.frame
...ata.frame does not support cols=.
Benchmark result
Here is a comparison of base (blue), dplyr (pink), and data.table (yellow) methods for dropping either all or select missing observations, on notional dataset of 1 million observations of 20 numeric variables with independent 5% likelihood of being ...
GLib compile error (ffi.h), but libffi is installed
...
If you have a Debian-based Linux OS with apt-get:
sudo apt-get install libffi-dev
With a Redhat-base OS:
yum install libffi-devel
With Alpine Linux:
apk add libffi-dev
...
File Upload using AngularJS
...lder upload using flow.js.
https://github.com/flowjs/ng-flow
Check out a demo here
http://flowjs.github.io/ng-flow/
It doesn't support IE7, IE8, IE9, so you'll eventually have to use a compatibility layer
https://github.com/flowjs/fusty-flow.js
...
Changing .prop using jQuery does not trigger .change event
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Unable to verify leaf signature
...e right way with certificates. I merely wanted to setup a quick test for a demo so the code I posted is a quick fix. I should have prefaced with that in my comment.
– LukeP
Jun 3 '15 at 21:48
...
Bootstrap Modal immediately disappearing
...robust at giving you a picture of everything loaded on a page.
A (Broken) Demo
Here's a demo of what happens when you load both the bootstrap.js and bootstrap-modal.js (just to confirm your experience):
Plunker
If you scroll down to the bottom of the source on that page, you can remove or commen...