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Ruby, !! operator (a/k/a the double-bang) [duplicate]
...including Ruby, ! will return the opposite of the boolean value of the operand. So when you chain two exclamation marks together, it converts the value to a boolean.
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How to do relative imports in Python?
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I don't understand: where is the answer here? How can one import modules in such a directory structure?
– Tom
Sep 29 '12 at 16:34
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How to scale threads according to CPU cores?
...termined the number of processors available, create that number of threads and split up your work accordingly.
Update: To further clarify, a Thread is just an Object in Java, so you can create it just like you would create any other object. So, let's say that you call the above method and find tha...
The following untracked working tree files would be overwritten by merge, but I don't care
...his will track all files, remove all of your local changes to those files, and then get the files from the server.
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How can I git stash a specific file?
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EDIT: Since git 2.13, there is a command to save a specific path to the stash: git stash push <path>. For example:
git stash push -m welcome_cart app/views/cart/welcome.thtml
OLD ANSWER:
You can do that using git stash --patch (or git stash -p) -- you...
Rails migrations: self.up and self.down versus change
Looks like the new rails version has "change" versus self.up and self.down methods.
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Please enter a commit message to explain why this merge is necessary, especially if it merges an upd
I am using Git. I did a pull from a remote repo and got an error message:
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Jaxb, Class has two properties of the same name
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I also faced problem like this and i set this.
@XmlRootElement(name="yourRootElementName")
@XmlAccessorType(XmlAccessType.FIELD)
This will work 100%
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Consequences of using graft in Mercurial
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When you update to D and graft F::J, Mercurial runs a number of merges. It will start with this merge:
M = three_way_merge(local=D, other=F, base=E)
If we write +d for the delta between the states C and D, then we start with:
+d +...
Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)
...ment's address, i.e. the same page.
It is also possible to leave it empty, and any browser implementing HTML's form submission algorithm will treat it as equivalent to the document's address, which it does mainly because that's how browsers currently work:
8. Let action be the submitter element's a...