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Spring: how do I inject an HttpServletRequest into a request-scoped bean?
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Doesn't work for me (spring mvc 3.1) - maybe there is something more that needs to be done? Going with Samit's solution.
– kldavis4
Dec 7 '12 at 17:07
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Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
...2.2+
h[s:] = 42
You can also use anything as a key with => so you can do this:
h = { C.new => 11 }
h = { 23 => 'pancakes house?' }
but you can't do this:
h = { C.new: 11 }
h = { 23: 'pancakes house?' }
The JavaScript style (key: value) is only useful if all of your Hash keys are "si...
How do I find the time difference between two datetime objects in python?
How do I tell the time difference in minutes between two datetime objects?
15 Answers
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How to move Jenkins from one PC to another
...rchive into the new JENKINS_HOME directory
Launch the new Jenkins instance
Do not forget to change documentation/links to your new instance of Jenkins :)
Do not forget to change the owner of the new Jenkins files : chown -R jenkins:jenkins $JENKINS_HOME
JENKINS_HOME is by default located in ~/.jen...
Immutability of Strings in Java
...s2 now point at the same string - "Hello"
Now, there is nothing1 we could do to s1 that would affect the value of s2. They refer to the same object - the string "Hello" - but that object is immutable and thus cannot be altered.
If we do something like this:
s1 = "Help!";
System.out.println(s2); // ...
Android equivalent to NSNotificationCenter
... best (only) option? NSUserDefaults seems much lighter weight than Intents do in both performance and coding.
8 Answers
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How do I add BundleConfig.cs to my project?
...et directs me to open BundleConfig.cs in App_Start - however this file does not exist in my project. I have only three files in that folder: FilterConfig , RouteConfig and WebApiConfig .
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DatabaseError: current transaction is aborted, commands ignored until end of transaction block?
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This is what postgres does when a query produces an error and you try to run another query without first rolling back the transaction. (You might think of it as a safety feature, to keep you from corrupting your data.)
To fix this, you'll want t...
Numpy: Get random set of rows from 2D array
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>>> A = np.random.randint(5, size=(10,3))
>>> A
array([[1, 3, 0],
[3, 2, 0],
[0, 2, 1],
[1, 1, 4],
[3, 2, 2],
[0, 1, 0],
[1, 3, 1],
[0, 4, 1],
[2, 4, 2],
[3, 3, 1]])
&...
Two way/reverse map [duplicate]
I'm doing this switchboard thing in python where I need to keep track of who's talking to whom, so if Alice --> Bob, then that implies that Bob --> Alice.
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