大约有 43,000 项符合查询结果（耗时：0.0614秒） [XML]
Search text in fields in every table of a MySQL database
...u can peek into the information_schema schema. It has a list of all tables and all fields that are in a table. You can then run queries using the information that you have gotten from this table.
The tables involved are SCHEMATA, TABLES and COLUMNS. There are foreign keys such that you can build u...
Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...QuerySet in the following ways:
Iteration. A QuerySet is iterable, and it executes its database query the first time you iterate over it. For example, this will print the headline of all entries in the database:
for e in Entry.objects.all():
print e.headline
So your ten million ro...
Using node-inspector with Grunt tasks
...ass the grunt script to node explicitly:
node-debug $(which grunt) task
and put a debugger; line in your task. node-inspector will then open a browser with debugging tools.
Edit 28 Feb 2014
node-inspector has added the command node-debug, which launches node in a --debug state and opens the bro...
How to determine when Fragment becomes visible in ViewPager
...
Thanks to today's Android Support Library update (rev 11), the user visible hint issue is finally fixed. It's now safe to use user visible hint for ViewPager.
– Oasis Feng
Nov 14 '12 at 3:05
...
Why are data transfer objects (DTOs) an anti-pattern?
...
Some projects have all data twice. Once as domain objects, and once as data transfer objects.
This duplication has a huge cost, so the architecture needs to get a huge benefit from this separation to be worth it.
...
What does the ??!??! operator do in C?
...?! is a trigraph that translates to |. So it says:
!ErrorHasOccured() || HandleError();
which, due to short circuiting, is equivalent to:
if (ErrorHasOccured())
HandleError();
Guru of the Week (deals with C++ but relevant here), where I picked this up.
Possible origin of trigraphs or as @...
Why isn't ProjectName-Prefix.pch created automatically in Xcode 6?
...ch as when you need __FILE__). If you do need macros, put them in a header and include it.
The prefix header was necessary for things that are huge and used by nearly everything in the whole system (like Foundation.h). If you have something that huge and ubiquitous, you should rethink your architec...
How to install Google Play Services in a Genymotion VM (with no drag and drop support)?
...w can I install Google Play Services in a Genymotion emulator with no drag and drop support?
17 Answers
...
科大讯飞徐景明：从语音交互到人工智能 - 资讯 - 清泛网 - 专注C/C++及内核技术
...额；下一步，科大讯飞的目标是成为中国人工智能产业的NO.1.
笃信语音交互将成主流
1999年，刘庆峰创办科大讯飞之初，便做了一款面向普通消费者的智能语音软件，因为太超前，遭到冷遇，公司生存岌岌可危。有人说，转行...
What is your single most favorite command-line trick using Bash? [closed]
...es with suffixes quickly:
cp /home/foo/realllylongname.cpp{,-old}
This expands to:
cp /home/foo/realllylongname.cpp /home/foo/realllylongname.cpp-old
share
answered Sep 16 '0...