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JavaScript Regular Expression Email Validation [duplicate]
...ernatively, define it as a regular expression:
var pattern = /^\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,3}$/;
BTW, please don't validate email addresses on the client-side. Your regular expression is way too simple to pass for a solid implementation anyway.
See the real thing here: http://www.ex-parrot.co...
Microbit 加速度传感器 · App Inventor 2 中文网
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Microbit 加速度传感器
Microbit_Accelerometer 组件允许用户配置 BBC micro:bit 的板载加速度计，并通过适当的方法接收一个或多个加速度计样本。
加速度计的报告速率（或周期）决定了数据发送到 App Inventor...
What does the git index contain EXACTLY?
...you the contents of the index:
$ git ls-files --stage
100644 63c918c667fa005ff12ad89437f2fdc80926e21c 0 .gitignore
100644 5529b198e8d14decbe4ad99db3f7fb632de0439d 0 .mailmap
The Racy git problem gives some more details on that structure:
The index is one of the most important data structures ...
In WPF, what are the differences between the x:Name and Name attributes?
...ass, Name and x:Name can be used
interchangeably as attributes, but an
error will result if both are
specified on the same element.
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Python element-wise tuple operations like sum
...so that it returns a tuple:
import operator
class stuple(tuple):
def __add__(self, other):
return self.__class__(map(operator.add, self, other))
# obviously leaving out checking lengths
>>> a = stuple([1,2,3])
>>> b = stuple([3,2,1])
>>> a + b
(4, 4,...
Generic deep diff between two objects
...alues" method).
var deepDiffMapper = function () {
return {
VALUE_CREATED: 'created',
VALUE_UPDATED: 'updated',
VALUE_DELETED: 'deleted',
VALUE_UNCHANGED: 'unchanged',
map: function(obj1, obj2) {
if (this.isFunction(obj1) || this.isFunction(obj2)) {
throw 'Inv...
Android adb “Unable to open sync connection!”
...files" issue. I manually tried to install the app when getting the "sync" error above and that's when I got the "too many open files" clue. one brute workaround, based on some old posts, seems to be to restart the phone, and one google engineer suggested doing it twice, the second time before it g...
How to calculate the running time of my program? [duplicate]
...s in the main method, calendar will be defined two times -> compilation error
– krtek
Mar 5 '11 at 13:35
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jQuery Mobile: document ready vs. page events
...time you visit some page it will bind events over and over. This is not an error, it is simply how jQuery Mobile handles its pages. For example, take a look at this code snippet:
$(document).on('pagebeforeshow','#index' ,function(e,data){
$(document).on('click', '#test-button',function(e) {
...
How can I use threading in Python?
....dummy import Pool as ThreadPool
pool = ThreadPool(4)
results = pool.map(my_function, my_array)
Which is the multithreaded version of:
results = []
for item in my_array:
results.append(my_function(item))
Description
Map is a cool little function, and the key to easily injecting parallelism i...