大约有 49,000 项符合查询结果（耗时：0.0601秒） [XML]
What is the fundamental difference between WebSockets and pure TCP?
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261
It's easier to communicate via TCP sockets when you're working within an intranet boundary, sinc...
What algorithm does Readability use for extracting text from URLs?
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170
+50
Readabi...
Postgresql query between date ranges
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211
With dates (and times) many things become simpler if you use >= start AND < end.
For exa...
VS2012 return to a normal TFS checkin window?
VS2012 seems to remove the popup window for TFS check-ins that was in VS2010. It now seems to take over the team explorer tab in my sidebar, and buries the important things - like which files I've changed. Is there any way to return to a normal popup window for check-ins in VS2012?
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Git diff -w ignore whitespace only at start & end of lines
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461
For end of line use:
git diff --ignore-space-at-eol
Instead of what are you using currently:
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What is the equivalent of “!=” in Excel VBA?
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154
Because the inequality operator in VBA is <>
If strTest <> "" Then
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th...
How to undo a git merge with conflicts
I am on branch mybranch1 . mybranch2 is forked from mybranch1 and changes were made in mybranch2 .
6 Answers
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Return 0 if field is null in MySQL
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Use IFNULL:
IFNULL(expr1, 0)
From the documentation:
If expr1 is not NULL, IFNULL() returns expr1; otherwise it returns expr2. IFNULL() returns a numeric or string value, depending on the context in which it is used.
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What is the difference between Android margin start/end and right/left?
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188
For left-to-right flow, start=left, end=right.
For right-to-left flow, start=right, end=left....
How do you print in a Go test using the “testing” package?
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148
The structs testing.T and testing.B both have a .Log and .Logf method that sound to be what yo...