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一个自媒体的运营手记：我做公众号已经两年多了 - 资讯 - 清泛网 - 专注C/C...
...还是忍住了，我把移动互联网定位于一个面向移动互联网App行业发展研究,创业运营,投融资趋势的信息平台,主要服务对移动互联网感兴趣的创业者、运营者、投融者等中高端人群。而对于和行业无关的，比如微信营销等之类的文...
Search for executable files using find command
...xecutable bit set.
find -L . -type f -perm -u=x,g=x \! -perm -o=x
[1] Description of -executable from man find as of GNU find 4.4.2:
Matches files which are executable and directories which are searchable (in a file name resolution sense). This takes into account access
con...
Proper use of beginBackgroundTaskWithExpirationHandler
...rtant that you call endBackgroundTask when you're finished - otherwise the app will be killed after its allotted time has expired.
Mine tend look something like this:
- (void) doUpdate
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[self beginBackg...
What is the difference between URI, URL and URN? [duplicate]
...
@ayush: A telephone number is in fact the description of the location of a given telephone connection. The number allows the telephone system to locate the receiver in the world-wide telephone network due to its unique telephone number and route the call appropriatel...
What are the minimum margins most printers can handle?
...printer, one part of its driver is an ASCII file called PostScript Printer Description (PPD). PPDs are used in the CUPS printing system on Linux and Mac OS X as well even for non-PostScript printers.
Every PPD MUST, according to the PPD specification written by Adobe, contain definitions of a *Imag...
What are some methods to debug Javascript inside of a UIWebView?
... you have mountain lion (10.8) or Safari >= 6, you can just:
Open the application in the simulator (or your device in XCode >= 4.5.x).
Open Safari (go to Preferences -> Advanced and make sure "Show Develop Menu in Menubar" is on.
From the Menu-bar (of Safari) select Develop -> iPhone S...
Xcode stops working after set “xcode-select -switch”
...
You should be pointing it towards the Developer directory, not the Xcode application bundle. Run this:
sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
With recent versions of Xcode, you can go to Xcode ➙ Preferences… ➙ Locations and pick one of the options for Comma...
How can I make Sublime Text the default editor for Git?
...xt.com/docs/3/osx_command_line.html but changed the path from Sublime Text.app to Sublime Text 2.app
– Evanss
Jul 10 '15 at 9:04
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What do all of Scala's symbolic operators mean?
...pecification(PDF) itself.
The last one, the underscore, deserve a special description, because it is so widely used, and has so many different meanings. Here's a sample:
import scala._ // Wild card -- all of Scala is imported
import scala.{ Predef => _, _ } // Exception, everything except Pr...
Custom checkbox image android
...="@drawable/checkbox_selector"
android:text="CheckBox"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="@color/Black" />
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