大约有 40,000 项符合查询结果（耗时：0.0721秒） [XML]
Correct Bash and shell script variable capitalization
I run across many shell scripts with variables in all caps, and I've always thought that there is a severe misunderstanding with that. My understanding is that, by convention (and perhaps by necessity long ago), environment variables are in all-caps.
...
How to change collation of database, table, column?
...
You need to either convert each table individually:
ALTER TABLE mytable CONVERT TO CHARACTER SET utf8mb4
(this will convert the columns just as well), or export the database with latin1 and import it back with utf8mb4.
...
Some font-size's rendered larger on Safari (iPhone)
...Ems are scalable in nature, so 2em would equal 24pt, .5em would equal 6pt, etc. Ems are becoming increasingly popular in web documents due to scalability and their mobile-device-friendly nature.
Pixels (px): Pixels are fixed-size units that are used in screen media (i.e. to be read on the computer s...
How to use web-fonts legally? [closed]
...fonts. I know that it's OK to use fonts like Arial, Times Romans, Georgia, etc...I think it's illegal to use other commercial fonts.
Are there websites that provide free fonts? If there are.
...
Is there a “goto” statement in bash?
...atement in bash ? I know It is considered bad practice, but I need specifically "goto".
12 Answers
...
How to delete all Annotations on a MKMapView
Is there a simple way to delete all the annotations on a map without iterating through all the displayed annotations in Objective-c?
...
How to implement an abstract class in ruby?
I know there is no concept of abstract class in ruby. But if at all it needs to be implemented, how to go about it? I tried something like...
...
In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
...ents that are passed by reference (id *) and are autoreleased on return.
All of this is very well explained in the ARC transition guide.
In your NSError example, the declaration means __strong, implicitly:
NSError * e = nil;
Will be transformed to:
NSError * __strong error = nil;
When you c...
RESTfully design /login or /register resources?
...I've heard that the verbs are typically left to the HTTP verbs (GET, POST, etc).
– Qcom
Sep 4 '11 at 4:22
2
...
What exactly is Java EE?
...ed application servers, like WildFly, TomEE, GlassFish, Liberty, WebLogic, etc. There are also servlet containers which implement only the JSP/Servlet part of the huge Java EE API, such as Tomcat, Jetty, etc.
We, Java EE developers, should write code utilizing the specification (i.e. import only jav...