大约有 40,000 项符合查询结果(耗时:0.0310秒) [XML]

https://stackoverflow.com/ques... 

How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?

...th a non-object argument (e.g. ints, floats, structs, non-object pointers, etc.). 13 Answers ...
https://stackoverflow.com/ques... 

Filtering by Multiple Specific Model Properties in AngularJS (in OR relationship)

...om/a8m/angular-filter#filterby collection | filterBy: [prop, nested.prop, etc..]: search share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Make a program run slowly

...ate less (and possibly shorter) execution time frames, preempt more often, etc. See Process Scheduling (Chapter 10) of Understanding the Linux Kernel for more details on scheduling. You may want to increase the timer interrupt frequency to put more load on the kernel, which will in turn slow everyth...
https://stackoverflow.com/ques... 

ALTER TABLE without locking the table?

...ferably in a transaction. Once finished, recompile any stored procedures, etc that use that table. The execution plans will likely no longer be valid. EDIT: Some comments have been made about this limitation being a bit poor. So I thought I'd put a new perspective on it to show why it's how it ...
https://stackoverflow.com/ques... 

How do I simulate a low bandwidth, high latency environment?

...t IP connection, you could (for example) do the following: Create a file /etc/rc.firewall.56k which contains the following: ipfw add pipe 1 ip from any to any out ipfw add pipe 2 ip from any to any in ipfw pipe 1 config bw 56Kbit/s ipfw pipe 2 config bw 56Kbit/s And change /etc/rc.conf......
https://stackoverflow.com/ques... 

Change the maximum upload file size

... On Linux, it's usually in /etc/php/ or something along those lines. If you're on a shared server, you're out of luck unless your hosting provider is generous enough to provide a per-user php.ini file. – Johannes Gorset ...
https://stackoverflow.com/ques... 

Cron job every three days

... you want it to run on specific days of the month, like the 1st, 4th, 7th, etc... then you can just have a conditional in your script that checks for the current day of the month. if (((date('j') - 1) % 3)) exit(); or, as @mario points out, you can use date('k') to get the day of the year inst...
https://stackoverflow.com/ques... 

Typical .gitignore file for an Android app

....class # generated files bin/ gen/ # Local configuration file (sdk path, etc) local.properties with Eclipse.gitignore: *.pydevproject .project .metadata bin/** tmp/** tmp/**/* *.tmp *.bak *.swp *~.nib local.properties .classpath .settings/ .loadpath # External tool builders .externalToolBuilde...
https://stackoverflow.com/ques... 

What is the difference between sed and awk? [closed]

...ata from different disparate sources (such as DB's, excel files, csv files etc), TRANSFORMATION of the same and then LOADING into a datawarehouse (DW) for analysis, finding patterns in data, or just historical records. eg. End use of a DW - Algorithms applied to a DW of a grocery store which has dat...
https://stackoverflow.com/ques... 

Android Archive Library (aar) vs standard jar

... Jar and a AAR is that AARs include resources such as layouts, drawables etc. This makes it a lot easier to create self-contained visual components. For example if you have multiple apps that use the same login screen, with Jars you could share classes but not the layout, styles, etc., you s...