大约有 46,000 项符合查询结果(耗时:0.0647秒) [XML]

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Ruby on Rails: How do I add placeholder text to a f.text_field?

How can I add placeholder text to my f.text_field fields so that the text comes pre-written by default, and when a user click inside the fields, the text goes away - allowing the user to type in the new text? ...
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What is the difference between '>' and a space in CSS selectors?

What's the point using this syntax 5 Answers 5 ...
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How to use GNU Make on Windows?

I installed MinGW and MSYS, added C:\MinGW\bin to PATH but I still can't run Makefile on Windows' cmd . I would like to run cmd.exe and there type, for example, make all but my cmd says that there is no such command. ...
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Using OR in SQLAlchemy

I've looked through the docs and I cant seem to find out how to do an OR query in SQLAlchemy. I just want to do this query. ...
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Are there any side effects of returning from inside a using() statement?

Returning a method value from inside a using statement that gets a DataContext seems to always work fine , like this: 5 ...
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Are “elseif” and “else if” completely synonymous?

Are elseif and else if completely synonymous, or is there a difference? 2 Answers ...
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Why can't enum's constructor access static fields?

Why can't enum's constructor access static fields and methods? This is perfectly valid with a class, but is not allowed with an enum. ...
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Edit a commit message in SourceTree Windows (already pushed to remote)

How do I edit an incorrect commit message in SourceTree without touching the command line? 4 Answers ...
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rotating axis labels in R

In R, how do I make a (bar)plot's y axis labels parallel to the X axis instead of parallel to the Y axis? 5 Answers ...
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Is there an equivalent of CSS max-width that works in HTML emails?

I'm trying to create an HTML email that will display properly in all widely used email clients. I'm wrapping the whole email in a table, and I'd like it to have a width that is up to 98% of the available width, but no greater than 800 pixels. Like this: <table style="width:98%; max-width:800px...