大约有 45,489 项符合查询结果（耗时：0.0372秒） [XML]
Deleting all records in a database table
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If you are looking for a way to it without SQL you should be able to use delete_all.
Post.delete_all
or with a criteria
Post.delete_all "person_id = 5 AND (category = 'Something' OR category = 'Else')"
See here for more information.
The records are ...
Parsing JSON giving “unexpected token o” error [duplicate]
...problem parsing simple JSON strings. I have checked them on JSONLint and it shows that they are valid. But when I try to parse them using either JSON.parse or the jQuery alternative it gives me the error unexpected token o :
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Received an invalid column length from the bcp client for colid 6
...database.
Verify the data in excel. Also verify the data in the excel for its format to be in compliance with the database table schema.
To avoid this, try exceeding the data-length of the string datatype in the database table.
Hope this helps.
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Get Folder Size from Windows Command Line
Is it possible in Windows to get a folder's size from the command line without using any 3rd party tool?
17 Answers
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The import javax.servlet can't be resolved [duplicate]
..., this is in a JAR called servlet-api.jar in Tomcat's lib folder. You can either add a reference to that JAR to the project's classpath, or put a copy of the JAR in your Eclipse project and add it to the classpath from there.
If you want to leave the JAR in Tomcat's lib folder:
Right-click the pr...
Analytics Google API Error 403: “User does not have any Google Analytics Account”
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I had this problem too. I fixed it by adding the email address for my service account to the Google Analytics profile I wanted it to access.
I got the email address (something like xxxxxx@developer.gserviceaccount.com) for the service account by looking und...
Node.js create folder or use existing
... have read the documentation of Node.js and, unless if I missed something, it does not tell what the parameters contain in certain operations, in particular fs.mkdir() . As you can see in the documentation, it's not very much.
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Handling an empty UITableView. Print a friendly message
I have a UITableView that in some cases it is legal to be empty. So instead of showing the
background image of the app, I would prefer to print a friendly message in the screen, such as:
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How can I declare and use Boolean variables in a shell script?
...o the original answer, and many of the comments are wrong when associated with the revised answer. For example, Dennis Williamson's comment about bash builtin true on Jun 2, 2010 only applies to the original answer, not the revised.
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Call a “local” function within module.exports from another function in module.exports?
How do you call a function from within another function in a module.exports declaration?
8 Answers
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