大约有 47,000 项符合查询结果(耗时:0.0564秒) [XML]

https://stackoverflow.com/ques... 

MySql : Grant read only options?

... If there is any single privilege that stands for ALL READ operations on database. It depends on how you define "all read." "Reading" from tables and views is the SELECT privilege. If that's what you mean by "all read" then yes: GRANT SELECT ON *.* TO 'username'...
https://stackoverflow.com/ques... 

Add margin above top ListView item (and below last) in Android

This is a pretty fine question about the layout of items in a ListView in Android. 5 Answers ...
https://stackoverflow.com/ques... 

When to throw an exception?

...e 1: say I have a function which is supposed to examine an arbitrary class and return true if that class inherits from List<>. This function asks the question, "Is this object a descendant of List?" This function should never throw an exception, because there are no gray areas in its operation...
https://stackoverflow.com/ques... 

When to choose mouseover() and hover() function?

What are the differences between jQuery .mouseover() and .hover() functions? If they are totally same why jQuery uses both? ...
https://stackoverflow.com/ques... 

Count occurrences of a char in a string using Bash

... I would use the following awk command: string="text,text,text,text" char="," awk -F"${char}" '{print NF-1}' <<< "${string}" I'm splitting the string by $char and print the number of resulting fields minus 1. If your shell does not support the &lt...
https://stackoverflow.com/ques... 

What is VanillaJS?

... when you saw your community wiki was getting votes, you decided to delete and repost it? – Blue Skies Dec 7 '13 at 0:01 22 ...
https://stackoverflow.com/ques... 

Are “while(true)” loops so bad? [closed]

...ed to read: it's got an extra else block, the actOnInput is more indented, and if you're trying to work out what happens when testCondition returns true, you need to look carefully through the rest of the block to check that there isn't something after the else block which would occur whether runnin...
https://stackoverflow.com/ques... 

Xcode 6 how to enable storyboard zoom?

I've updated to Xcode 6 beta 3 and see that the [+ = -] buttons in the storyboard corner are gone. Is there a way for me to zoom in and out on view controllers within a storyboard in Xcode 6? ...
https://stackoverflow.com/ques... 

How do you round a floating point number in Perl?

...f perldoc -q round Does Perl have a round() function? What about ceil() and floor()? Trig functions? Remember that int() merely truncates toward 0. For rounding to a certain number of digits, sprintf() or printf() is usually the easiest route. printf("%.3f", 3.1415926535); # prints 3...
https://stackoverflow.com/ques... 

Is there a Python equivalent of the C# null-coalescing operator?

...ator does not return only True or False. Instead, it returns the first operand if the first operand evaluates to true, and it returns the second operand if the first operand evaluates to false. In this case, the expression x or y returns x if it is True or evaluates to true when converted to boolea...