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Math.random() explanation
...both positive and negative, and minimum/maximum boundaries can come in any order.
int myRand(int i_from, int i_to) {
return (int)(Math.random() * (Math.abs(i_from - i_to) + 1)) + Math.min(i_from, i_to);
}
In general, it finds the absolute distance between the borders, gets relevant random value...
Is returning null bad design? [closed]
...o when I actually want to return null, I have been naming the method like getCustomerOrNull() to make it explicit. I think a method is named well when the reader doesn't want to look at the implementation.
– Mike Valenty
Aug 17 '09 at 4:23
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Conversion of a datetime2 data type to a datetime data type results out-of-range value
...Type object for the DataColumn constructor is the typeof keyword, which is orders of magnitude faster.
Therefore, to create the column, you should write
new DataColumn("myDate", typeof(DateTime))
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What is the best way to unit test Objective-C code?
...s is an old question, but if you prefer BDD-style testing (rspec, Jasmine, etc.) over xUnit-style testing (Test::Unit, JSUnit, JUnit, etc.), then you may consider checking out Cedar. Cedar brings BDD-style testing to Objective-C, now that the language supports closures.
We're happily using Cedar fo...
Bash if [ false ] ; returns true
...ash
The if statement takes a command as an argument (as do &&, ||, etc.). The integer result code of the command is interpreted as a boolean (0/null=true, 1/else=false).
The test statement takes operators and operands as arguments and returns a result code in the same format as if. An alias ...
Javascript Drag and drop for touch devices [closed]
...hat must be dragged around. If it is an input element like input, textarea etc, it skips the translation, or if a standard mouse event is attached to it it will also skip a translation.
Result:
Every element on a draggable element is still working.
Happy coding, greetz,
Erwin Haantjes
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How can I expand and collapse a using javascript?
...a container with different sections, so this is not a list like 1, 2, 3... etc. I am listing repeating sections with information. In each section, there is a subsection. The general build is as follows:
...
How do I use arrays in C++?
...(Note that the implicitly generated pointer has no name, so I wrote x+0 in order to identify it.)
If, on the other hand, x denotes a pointer to the first (or any other) element of an array, then array-to-pointer decay is not necessary, because the pointer on which i is going to be added already exi...
What's the easiest way to install a missing Perl module?
...commands it stays at the command line. So, "ppm help", "ppm install ...", etc.
– Bill Ruppert
Apr 13 '12 at 22:40
Not...
Search for executable files using find command
... scenario it may make sense to use find -L ... instead of just find ... in order to also find symlinks to executables.
Note that the simplest file-centric case - looking for executables with the executable permissions bit set for ALL three security principals (user, group, other) - will typically, ...