大约有 20,000 项符合查询结果(耗时:0.0388秒) [XML]

https://stackoverflow.com/ques... 

Why doesn't margin:auto center an image?

...style="text-align:center;" try below code <html> <head> <title>Test</title> </head> <body> <div style="text-align:center;vertical-align:middle;"> <img src="queuedError.jpg" style="margin:auto; width:200px;" /> </div> </body&...
https://stackoverflow.com/ques... 

Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?

...ls is to use the "empty tree" hash as an argument to git diff-tree in some scripts I'm writing. There's no guarantee that there is an initial empty commit in the repo. So I'm just wondering if these scripts might end up breaking someday. – torek Mar 19 '12 at...
https://stackoverflow.com/ques... 

ggplot with 2 y axes on each side and different scales

...s = function(b) { paste0(round(b * 100, 0), "%")})) + theme( axis.title.y = element_text(color = "grey"), axis.title.y.right = element_text(color = "blue")) Here's the result (above code + some color tweaking): The point (aside from using sec_axis when specifying the y_scale is ...
https://stackoverflow.com/ques... 

When should I use a table variable vs temporary table in sql server?

...t difference in behaviour between the two). Regarding the question in the title though as to when to use a table variable vs a local temporary table you don't always have a choice. In functions, for example, it is only possible to use a table variable and if you need to write to the table in a chil...
https://stackoverflow.com/ques... 

how to programmatically fake a touch event to a UIButton?

...t, for: nil) } } And now you can simply: let action = UIBarButtonItem(title: "title", style: .done, target: self, action: #selector(doSomething)) action.sendAction() share | improve this answe...
https://stackoverflow.com/ques... 

Read user input inside a loop

I am having a bash script which is something like following, 6 Answers 6 ...
https://stackoverflow.com/ques... 

overlay opaque div over youtube iframe

... tip. Add wmode=transparent as a parameter to the YouTube URL: <iframe title=<your frame title goes here> src="http://www.youtube.com/embed/K3j9taoTd0E?wmode=transparent" scrolling="no" frameborder="0" width="640" height="390" style="border:none;"> </if...
https://stackoverflow.com/ques... 

How to correctly use “section” tag in HTML5?

...When an element is needed for styling purposes or as a convenience for scripting, authors are encouraged to use the div element instead. A general rule is that the section element is appropriate only if the element's contents would be listed explicitly in the document's outline. Referenc...
https://stackoverflow.com/ques... 

Valid values for android:fontFamily and what they map to?

... | Coming Soon | casual | Dancing Script | cursive | Dancing Script Bold | cursive | bold Carrois Gothic SC | sans-serif-smallcaps | (Noto Sans is a fallback font; you can't specify it dir...
https://stackoverflow.com/ques... 

TimeStamp on file name using PowerShell

... You can insert arbitrary PowerShell script code in a double-quoted string by using a subexpression, for example, $() like so: "C:\temp\mybackup $(get-date -f yyyy-MM-dd).zip" And if you are getting the path from somewhere else - already as a string: $dirNam...