大约有 48,000 项符合查询结果（耗时：0.0707秒） [XML]
JavaScript: clone a function
...t wrap twice when called twice, but otherwise, ok.
– Andrey Shchekin
Dec 2 '09 at 19:25
apply is used to pass the argu...
How to test which port MySQL is running on and whether it can be connected to?
I have installed MySQL and even logged in there as a user.
13 Answers
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Is there something like RStudio for Python? [closed]
In RStudio, you can run parts of code in the code editing window, and the results appear in the console.
10 Answers
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How can I trim leading and trailing white space?
I am having some troubles with leading and trailing white space in a data.frame.
13 Answers
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What are the main purposes of using std::forward and which problems it solves?
...arding, std::forward is used to convert the named rvalue references t1 and t2 to unnamed rvalue references. What is the purpose of doing that? How would that affect the called function inner if we leave t1 & t2 as lvalues?
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How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
... users. The problem with Tomcat is that it does not offer JSTL out the box and thus you have to manually install it. This is not necessary in normal Java EE servers. See also What exactly is Java EE?
In your specific case, your pom.xml basically tells you that you have jstl-1.2.jar and standard-1.1...
twig: IF with multiple conditions
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If I recall correctly Twig doesn't support || and && operators, but requires or and and to be used respectively. I'd also use parentheses to denote the two statements more clearly although this isn't technically a requirement.
{%if ( fields | length > 0 ) or ...
SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
What is the difference between CROSS JOIN and FULL OUTER JOIN in SQL Server?
10 Answers
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Convert string to variable name in python [duplicate]
...mically create a variable, this is not the way to do it; just use setattr. And even when setattr is inappropriate for whatever reason, being explicit and modifying locals or globals as appropriate is still better than exec.
– abarnert
Oct 1 '13 at 17:57
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What is the proper way to test if a parameter is empty in a batch file?
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And using "%~1" is really a better approach, as I mentioned in my answer.
– jamesdlin
May 31 '15 at 21:08
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