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How do I get the size of a java.sql.ResultSet?
...ng about them to others, regardless of whether they are static or not. Actually creating an instance of the object and calling the method is implied.
– laz
Oct 10 '08 at 18:23
51
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How to remove an item for a OR'd enum?
...amp; it with the ~ (complement) of 'BLUE'.
The complement operator essentially reverses or 'flips' all bits for the given data type. As such, if you use the AND operator (&) with some value (let's call that value 'X') and the complement of one or more set bits (let's call those bits Q and thei...
How do you stash an untracked file?
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To stash your working directory including untracked files (especially those that are in the .gitignore) then you probably want to use this cmd:
git stash --include-untracked
More details:
Update 17 May 2018:
New versions of git now have git stash --all which stashes all files, includin...
Does the default constructor initialize built-in types?
...erformed by other means. Not by default constructor, nor by constructor at all.
For example, there's a widespread incorrect belief that for class C the syntax C() always invokes default constructor. In reality though, the syntax C() performs so called value-initialization of the class instance. It...
What is the purpose of a stack? Why do we need it?
...there a transfer from stack to memory or "storing"? Why not just have them all placed in the memory?
MSIL is a "virtual machine" language. Compilers like the C# compiler generate CIL, and then at runtime another compiler called the JIT (Just In Time) compiler turns the IL into actual machine code ...
Replacing column values in a pandas DataFrame
...strings containing numbers. You can convert them to "1" and "0", if you really want, but I'm not sure why you'd want that.)
The reason your code doesn't work is because using ['female'] on a column (the second 'female' in your w['female']['female']) doesn't mean "select rows where the value is 'fe...
How can I pipe stderr, and not stdout?
...1 >/dev/null | grep 'something'
For the details of I/O redirection in all its variety, see the chapter on Redirections in the Bash reference manual.
Note that the sequence of I/O redirections is interpreted left-to-right, but pipes are set up before the I/O redirections are interpreted. File ...
How do I merge my local uncommitted changes into another Git branch?
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Stashing, temporary commits and rebasing may all be overkill. If you haven't added the changed files to the index, yet, then you may be able to just checkout the other branch.
git checkout branch2
This will work so long as no files that you are editing are different ...
Mercurial undo last commit
How can I undo my last accidentally commited (not pushed) change in Mercurial?
7 Answers
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django models selecting single field
I have a table/models called Employees and I would like to get all rows of a single field as a queryset.
5 Answers
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