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How to validate phone numbers using regex
...gal delimiters? Spaces, dashes, and periods? No delimiter allowed? Can one mix delimiters (e.g., +0.111-222.3333)? How are extensions (e.g., 111-222-3333 x 44444) going to be handled? What about special numbers, like 911? Is the area code going to be optional or required?
Here's a regex for a 7 or...
How to implement the activity stream in a social network
...he most recent 100 for each user or something like that. With Redis in the mix, it might work like this:
Create your MySQL activity record
For each friend of the user who created the activity, push the ID onto their activity list in Redis.
Trim each list to the last X items
Redis is fast and of...
How to use unicode characters in Windows command line?
...ready said, CMD is fine too.
UPD: Initially, for a bug in cp65001, I was mixing up Kernel and CRTL layers (UPD²: and Windows user-mode API!). Also: Win8 fixes one half of this bug; I clarified the section about “better console” application, and added a reference to how Python does it.
...
Why git can't do hard/soft resets by path?
...ting version of the file).
A soft reset for a path doesn't make sense.
A mixed reset for a path is what git reset -- <path> does.
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What's the difference between a temp table and table variable in SQL Server?
...092 | 19 | |
| LOP_DELETE_ROWS | LCX_TEXT_MIX | Unknown Alloc Unit | 16348 | 37 | 16348 | 37 | |
| LOP_FORMAT_PAGE | LCX_HEAP | Unknown Alloc Unit | 1596 | 19 | 1596 | 19 |...
Why do I get “a label can only be part of a statement and a declaration is not a statement” if I hav
... C99 relaxed that restriction, permitting declarations and statement to be mixed within a block, but the syntax of a labeled-statement was not changed.
– Keith Thompson
Aug 28 '13 at 19:21
...
Logging in Scala
...eniently provides a Logger instance initialized with the name of the class mixed into:
import com.typesafe.scalalogging.slf4j.LazyLogging
class MyClass extends LazyLogging {
logger.debug("This is very convenient ;-)")
}
...
Linear Regression and group by in R
...
In my opinion is a mixed linear model a better approach for this kind of data. The code below given in the fixed effect the overall trend. The random effects indicate how the trend for each individual state differ from the global trend. The cor...
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术
创APP如搭积木 - 创意无限，梦想即时！ 手机版 手机“扫一扫” var qrcode = new QRCode("qrcode", { text: 'https://m.tsingfun.com/it/opensource/0MQ-The-Theoretical-Foundation.html', //URL地址 width: 180, height: 180, colorDark: '#088CEF'...
What is the standard naming convention for html/css ids and classes?
..., which may easily change over time.
Update 2013
It looks like I like to mix things up yearly... After switching to Sublime Text and using Bootstrap for a while, I've gone back to dashes. To me now they look a lot cleaner than un_der_scores or camelCase. My original point still stands though: ther...