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What is Ruby's double-colon `::`?
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:: is basically a namespace resolution operator. It allows you to access items in modules, or class-level items in classes. For example, say you had this setup:
module SomeModule
module InnerModule
class MyClass
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Force Java timezone as GMT/UTC
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Yep, that fine. Just one point to mention, that I actually set the user.timezone directly in code, rather then via the -D parameter.
– SyBer
Apr 13 '10 at 21:10
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When to use references vs. pointers
...going in undefined-behaviour-land;
the reference attribute version doesn't allow (without easy to spot tricks) the problem with 1.
the reference attribute version is simpler to understand for the user: you have to provide a valid object, not something that could be null.
If the behaviour of the fun...
what is the difference between XSD and WSDL
... Paolo answer is correct. Just enhancing it. As WSDL is actually XML and may or may not have XSD to validate it's structure. Associated XSD may be a separate file and imported in WSDL or full XSD can be embedded inline in WSDL file itself using <WSDL:types> tag .For more details...
Why does python use 'else' after for and while loops?
...to seasoned Python coders. When used in conjunction with for-loops it basically means "find some item in the iterable, else if none was found do ...". As in:
found_obj = None
for obj in objects:
if obj.key == search_key:
found_obj = obj
break
else:
print('No object found.')
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How to fetch all Git branches
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You can fetch all branches from all remotes like this:
git fetch --all
It's basically a power move.
fetch updates local copies of remote branches so this is always safe for your local branches BUT:
fetch will not update local branch...
Method can be made static, but should it?
...nce members of the C# Language Specification explains the difference. Generally, static methods can provide a very small performance enhancement over instance methods, but only in somewhat extreme situations (see this answer for some more details on that).
Rule CA1822 in FxCop or Code Analysis stat...
Is it possible to install another version of Python to Virtualenv?
I have a shared account in a web-hosting that has Python 2.4 installed, but my code is not compatible with 2.4. Is it possible to install Python 2.6 directly to Virtualenv?
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In the shell, what does “ 2>&1 ” mean?
...ay look like a good way to redirect stderr to stdout. However, it will actually be interpreted as "redirect stderr to a file named 1". & indicates that what follows is a file descriptor and not a filename. So the construct becomes: 2>&1.
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How can I distinguish whether Switch,Checkbox Value is changed by user or programmatically (includin
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If you want to set checked from code without triggering the listener, call myCheckBox.silentlySetChecked(someBoolean) instead of setChecked.
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