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Reason to Pass a Pointer by Reference in C++?
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I'd like to add that som>me m>tim>me m>s you also want to return a pointer by reference. For instance, if you have a class holding data in a dynamically allocated array, but you want to provide (nonconstant) access to this data to the client. At the sam>me m> tim...
How do I alter the position of a column in a PostgreSQL database table?
... column are defining an extension to SQL syntax.
One other idea occurs to m>me m>: you can define a VIEW that specifies the order of columns how you like it, without changing the physical position of the column in the base table.
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this.setState isn't m>me m>rging states as I would expect
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I think setState() doesn't do recursive m>me m>rge.
You can use the value of the current state this.state.selected to construct a new state and then call setState() on that:
var newSelected = _.extend({}, this.state.selected);
newSelected.nam>me m> = 'Barfoo';
this.setStat...
Case insensitive string compare in LINQ-to-SQL
...rm case-insensitive string comparisons, but I see no alternative when it com>me m>s to LINQ-to-SQL. The ignoreCase and CompareOptions argum>me m>nts of String.Compare are ignored by LINQ-to-SQL (if you're using a case-sensitive database, you get a case-sensitive comparison even if you ask for a case-insensiti...
Initialize class fields in constructor or at declaration?
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Prefer initialization in declaration if you don't have a constructor param>me m>ter that changes the value of the field.
If the value of the field changes because of a constructor param>me m>ter put the initialization in the constructors.
Be consistent in your practice (the most important rule).
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In C#, what is the difference between public, private, protected, and having no access modifier?
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Access modifiers
From docs.microsoft.com:
public
The type or m>me m>mber can be accessed by any other code in the sam>me m> assembly or another assembly that references it.
private
The type or m>me m>mber can only be accessed by code in the sam>me m> class or struct.
protected
The type or m>me m>mber can only ...
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
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Rails has an except/except! m>me m>thod that returns the hash with those keys removed. If you're already using Rails, there's no sense in creating your own version of this.
class Hash
# Returns a hash that includes everything but the given keys.
# ha...
When do you use varargs in Java?
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Varargs are useful for any m>me m>thod that needs to deal with an indeterminate number of objects. One good example is String.format. The format string can accept any number of param>me m>ters, so you need a m>me m>chanism to pass in any number of objects.
String....
When is finally run if you throw an exception from the catch block?
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and never if you call Envrionm>me m>nt.FailFast()
– Johannes Rudolph
Oct 12 '09 at 17:22
16
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How good is Java's UUID.randomUUID?
... which is supposed to be "cryptographically strong". While the actual implem>me m>ntation is not specified and can vary between JVMs (m>me m>aning that any concrete statem>me m>nts made are valid only for one specific JVM), it does mandate that the output must pass a statistical random number generator test.
It's...