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Using Default Arguments in a Function
...ith this method, passing a null value means you want the default value for one parameter when you want to override the default value for a parameter that comes after it.
As stated in other answers,
default parameters only work as the last arguments to the function.
If you want to declare th...
MySQL INSERT INTO table VALUES.. vs INSERT INTO table SET
... @Pacerier Such as? The only problem I see is a portability one (which, in many contexts doesn't really matter); am I missing something?
– Mark Amery
Jan 29 '13 at 13:56
...
How to get unique device hardware id in Android? [duplicate]
...he unique device ID in Android which cannot be changed when performing a phone reset or OS update?
3 Answers
...
Prevent direct access to a php include file
...he question clearly, then it is a good answer. Providing an example where none is needed only encourages copy-and-paste coding.
– Chuck
Sep 10 '13 at 21:03
...
Why does Math.Round(2.5) return 2 instead of 3?
...urn ValueType: System.DoubleThe integer nearest a. If the
fractional component of a is halfway
between two integers, one of which is
even and the other odd, then the even
number is returned. Note that this
method returns a Double instead of an
integral type.
RemarksThe behavior of t...
What does inverse_of do? What SQL does it generate?
...lt; ActiveRecord::Base
has_many :traps, :inverse_of => :dungeon
has_one :evil_wizard, :inverse_of => :dungeon
end
class Trap < ActiveRecord::Base
belongs_to :dungeon, :inverse_of => :traps
end
class EvilWizard < ActiveRecord::Base
belongs_to :dungeon, :inverse_of => :evil...
How do you deal with configuration files in source control?
...e configuration.whatever. Every developer working on the project will have one version for their dev boxes, there will be a dev, prod and stage versions. How do you deal with this in source control? Not check in this file at all, check it with different names or do something fancy altogether?
...
How to identify unused css definitions
... from the description, you have to provide the path of your html files and one CSS file. The program will then list the unused CSS selectors. From the screenshot, it looks like there is no way to export this list or download a new clean CSS file. It also looks like the service is limited to one CSS ...
What is a loop invariant?
...
There is one thing that many people don't realize right away when dealing with loops and invariants. They get confused between the loop invariant, and the loop conditional ( the condition which controls termination of the loop ).
...
Bash array with spaces in elements
...apes:
for ((i = 0; i < ${#FILES[@]}; i++))
do
echo "${FILES[$i]}"
done
Any of these declarations of $FILES should work:
FILES=(2011-09-04\ 21.43.02.jpg
2011-09-05\ 10.23.14.jpg
2011-09-09\ 12.31.16.jpg
2011-09-11\ 08.43.12.jpg)
or
FILES=("2011-09-04 21.43.02.jpg"
"2011-09-05 10.23.14.j...