大约有 45,000 项符合查询结果（耗时：0.0943秒） [XML]
Set transparent background using ImageMagick and commandline prompt
Suppose you have any image (PNG or JPG).
This image has a white background and I need to make this background transparent.
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How to write an async method with out parameter?
I want to write an async method with an out parameter, like this:
11 Answers
11
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generate days from date range
...010-01-23
2010-01-22
2010-01-21
2010-01-20
Notes on Performance
Testing it out here, the performance is surprisingly good: the above query takes 0.0009 sec.
If we extend the subquery to generate approx. 100,000 numbers (and thus about 274 years worth of dates), it runs in 0.0458 sec.
Incidental...
Why are functions in Ocaml/F# not recursive by default?
Why is it that functions in F# and Ocaml (and possibly other languages) are not by default recursive?
6 Answers
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How to replace ${} placeholders in a text file?
...ving variables like ${dbName} interspersed. What is the command line utility to replace these instances and dump the output to standard output?
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How to get C# Enum description from value? [duplicate]
I have an enum with Description attributes like this:
5 Answers
5
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PHP mkdir: Permission denied problem
I am trying to create a directory with PHP mkdir function but I get an error as follows: Warning: mkdir() [function.mkdir]: Permission denied in ... . How to settle down the problem?
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Remove Elements from a HashSet while Iterating [duplicate]
So, if I try to remove elements from a Java HashSet while iterating, I get a ConcurrentModificationException . What is the best way to remove a subset of the elements from a HashSet as in the following example?
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Android - Spacing between CheckBox and text
...nswer my own question, but in this case I think I need to. After checking it out, @Falmarri was on the right track with his answer. The problem is that Android's CheckBox control already uses the android:paddingLeft property to get the text where it is.
The red line shows the paddingLeft offset v...
YouTube Video Embedded via iframe Ignoring z-index?
...uTube video embedded via iframe. If I hover over one of the main level nav items in Firefox, the dropdown menu properly appears on top of the video.
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