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Is it OK to use == on enums in Java?
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Just my 2 cents: Here is the code for Enum.java, as published by Sun, and part of the JDK:
public abstract class Enum<E extends Enum<E>>
implements Comparable<E>, Serializable {
// [...]
/**
* Returns true if the specified object is equal to this
* enu...
How do I associate a Vagrant project directory with an existing VirtualBox VM?
...irtualBox VM, so that when I vagrant up Vagrant will import the base-box and create a new virtual machine.
10 Answers
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What is the most effective way to get the index of an iterator of an std::vector?
I'm iterating over a vector and need the index the iterator is currently pointing at. AFAIK this can be done in two ways:
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In Perl, how can I read an entire file into a string?
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Add:
local $/;
before reading from the file handle. See How can I read in an entire file all at once?, or
$ perldoc -q "entire file"
See Variables related to filehandles in perldoc perlvar and perldoc -f local.
Incidentally, if you can put your script on the server,...
How do I log a Python error with debug information?
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Correct me if I'm wrong, in this case, there is no real handling of the exception and therefore it make sense to add raise at the end of the except scope. Otherwise, running will continue as if everything was fine.
– Dror
Nov 9 '18 at 14:36
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Javascript objects: get parent [duplicate]
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No. There is no way of knowing which object it came from.
s and obj.subObj both simply have references to the same object.
You could also do:
var obj = { subObj: {foo: 'hello world'} };
var obj2 = {};
obj2.subObj = obj.subObj;
var s = obj.subObj;
You now have three references, obj...
Passing Objects By Reference or Value in C#
... have always thought that non-primitive variables were passed by reference and primitive values passed by value.
7 Answers
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Multi-line regex support in Vim
I notice the standard regex syntax for matching across multiple lines is to use /s, like so:
1 Answer
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How can I make a UITextField move up when the keyboard is present - on starting to edit?
...e TextField scroll up when keyboard comes up, then it's not needed.)
The standard way to prevent the TextFields from being covered by the keyboard is to move the view up/down whenever the keyboard is shown.
Here is some sample code:
#define kOFFSET_FOR_KEYBOARD 80.0
-(void)keyboardWillShow {
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How to read a file in reverse order?
... line in reversed(open("filename").readlines()):
print line.rstrip()
And in Python 3:
for line in reversed(list(open("filename"))):
print(line.rstrip())
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