大约有 13,071 项符合查询结果（耗时：0.0202秒） [XML]
Are Java static initializers thread safe?
I'm using a static code block to initialize some controllers in a registry I have. My question is therefore, can I guarantee that this static code block will only absolutely be called once when the class is first loaded? I understand I cannot guarantee when this code block will be called, I'm guessi...
Can I restore a single table from a full mysql mysqldump file?
I have a mysqldump backup of my mysql database consisting of all of our tables which is about 440 megs. I want to restore the contents of just one of the tables from the mysqldump. Is this possible? Theoretically, I could just cut out the section that rebuilds the table I want but I don't even know ...
Best practice for nested fragments in Android 4.0, 4.1 (
I'm writing an app for 4.0 and 4.1 tablets, for which I do not want to use the support libraries (if not needed) but the 4.x api only therefore.
...
What is the difference between IEqualityComparer and IEquatable?
I want to understand the scenarios where IEqualityComparer<T> and IEquatable<T> should be used.
The MSDN documentation for both looks very similar.
...
CSS transition shorthand with multiple properties?
...t seem to find the correct syntax for the CSS transition shorthand with multiple properties. This doesn't do anything:
6 ...
LEFT JOIN only first row
I read many threads about getting only the first row of a left join, but, for some reason, this does not work for me.
6 Ans...
ImportError: numpy.core.multiarray failed to import
I'm trying to run this program
26 Answers
26
...
MySQL: How to copy rows, but change a few fields?
I have a large number of rows that I would like to copy, but I need to change one field.
6 Answers
...
How do I delete all untracked files from my working directory in Mercurial?
Is it possible to delete all untracked files from my working directory? Let's say I added a bunch of files to my working directory, didn't add them via 'hg add' and now want to get rid of those new files entirely?
...
SQL JOIN vs IN performance?
I have a case where using a JOIN or an IN will give me the correct results... Which typically has better performance and why? How much does it depend on what database server you are running? (FYI I am using MSSQL)
...