大约有 45,000 项符合查询结果（耗时：0.0440秒） [XML]
Oracle SELECT TOP 10 records
...current query in subquery as below :
SELECT * FROM (
SELECT DISTINCT
APP_ID,
NAME,
STORAGE_GB,
HISTORY_CREATED,
TO_CHAR(HISTORY_DATE, 'DD.MM.YYYY') AS HISTORY_DATE
FROM HISTORY WHERE
STORAGE_GB IS NOT NULL AND
APP_ID NOT IN (SELECT APP_ID FROM HISTORY WHERE TO_CHAR(...
Android应用开发性能优化完全分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...种流畅的帧率规定为60fps。
有了上面的背景，我们开发App的帧率性能目标就是保持在60fps，也就是说我们在进行App性能优化时心中要有如下准则：
换算关系：60帧/秒-----------16ms/帧；
准则：尽量保证每次在16ms内处理完所有的...
Animate the transition between fragments
... work, but the others in /res/animator give errors. And none of those even appear to be for sliding in and sliding out. I've tried to write my own xml's to do this, but all I end up with is fragments on top of fragments. Some more help please?
– Dave MacLean
Fe...
How to solve error message: “Failed to map the path '/'.”
...searched and searched on Google, and I can't find anything that even seems applicable to my situation, let alone solves the problem. It doesn't matter which address in my website I try to navigate to (even addresses that don't exist give this error instead of a 404), I get the exact same message (th...
How to detect if app is being built for device or simulator in Swift
In Objective-C we can know if an app is being built for device or simulator using macros:
20 Answers
...
Android - Back button in the title bar
In many apps (Calendar, Drive, Play Store) when you tap a button and enter a new activity, the icon in the title bar turns into a back button, but for the app I am making, it doesn't do that. How do I make that icon take you back to the previous screen?
...
Separate REST JSON API server and client? [closed]
I'm about to create a bunch of web apps from scratch. (See http://50pop.com/code for overview.) I'd like for them to be able to be accessed from many different clients: front-end websites, smartphone apps, backend webservices, etc. So I really want a JSON REST API for each one.
...
do you have kcachegrind like profiling tools for mac [closed]
... Protection: sudo ln -s /usr/local/bin/dot /usr/bin/dot Workaround: $ cd /Applications/qcachegrind.app/Contents/MacOS $ mv qcachegrind qcachegrind.bin $ echo ‘#!/bin/bash export PATH=”$PATH:/usr/local/bin” $(dirname $0)/qcachegrind.bin exit 0’ > qcachegrind $ chmod +x qcachegrind Then s...
Runtime vs. Compile time
...specially for people without much background in programming languages. To approach this problem, I find it helpful to ask
What invariants does the program satisfy?
What can go wrong in this phase?
If the phase succeeds, what are the postconditions (what do we know)?
What are the inputs and output...
Adding parameter to ng-click function inside ng-repeat doesn't seem to work
...string from a property of the binding object (the button), but it is not wrapped in quotes. Looks like AngularJS handles that for us. I got hung up on that for a few minutes.
share
|
improve this ...