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Software Design vs. Software Architecture [closed]
Could someone explain the difference between Software Design and Software Architecture?
41 Answers
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Javascript: formatting a rounded number to N decimals
... that is a display problem. A number doesn't contain information about significant digits; the value 2 is the same as 2.0000000000000. It's when you turn the rounded value into a string that you have make it display a certain number of digits.
You could just add zeroes after the number, something l...
Do c++11 lambdas capture variables they don't use?
...ed in the capture list and (b) used in the body of the lambda expression. If a variable is not expressly named and you don't use the variable in the lambda expression, then the variable is not captured. In your example, my_huge_vector is not captured.
Per C++11 §5.1.2[expr.prim.lambda]/11:
If a ...
Android - Set fragment id
... can set inside the FragmentTransaction which can be used to uniquely identify a Fragment.
As Aleksey pointed out, you can pass an ID to FragmentTransaction's add(int, Fragment) method. However, this does not specify the ID for a Fragment. It specifies the ID of a ViewGroup to insert the Fragment i...
Does MySQL ignore null values on unique constraints?
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this little feature has been very difficult to find an answer to that does not require adding a new column to the database or upgrading MySQL on a very old application. I was really looking for a solution like Postgres where I can use COALESCE but it seems the...
How do I get Month and Date of JavaScript in 2 digit format?
... @KasperHoldum–getMonth and getDate return numbers, not strings. And if compatibility with Strings is required, then '0' + Number(n) will do the job.
– RobG
Jul 23 '12 at 0:16
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How to revert a “git rm -r .”?
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git reset HEAD
Should do it. If you don't have any uncommitted changes that you care about, then
git reset --hard HEAD
should forcibly reset everything to your last commit. If you do have uncommitted changes, but the first command doesn't work, then s...
Generating random numbers in Objective-C
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You should use the arc4random_uniform() function. It uses a superior algorithm to rand. You don't even need to set a seed.
#include <stdlib.h>
// ...
// ...
int r = arc4random_uniform(74);
The arc4random man page:
NAME
arc4random, arc4random...
kill -3 to get java thread dump
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Yes - at the point in time it is run. You can also specify -l (lowercase L) for a long listing that prints additional lock information
– Joshua McKinnon
Feb 2 '11 at 18:44
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How to include “zero” / “0” results in COUNT aggregate?
...e function count() will not count NULL values and thus you'll get a zero.
If you want to learn more about outer joins, here is a nice tutorial: http://sqlzoo.net/wiki/Using_Null
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