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How can I get every nth item from a List?
... @mquander: Note that this will actually give you the nth - 1 element. If you want the actual nth elements (skipping the first) then you will have to add 1 to i.
– casperOne
Mar 25 '09 at 17:37
...
How to check if an object is a certain type
...ssing various objects to a subroutine to run the same process but using a different object each time. For example, in one case I am using a ListView and in another case I am passing a DropDownList.
...
Generating all permutations of a given string
...oid permutation(String prefix, String str) {
int n = str.length();
if (n == 0) System.out.println(prefix);
else {
for (int i = 0; i < n; i++)
permutation(prefix + str.charAt(i), str.substring(0, i) + str.substring(i+1, n));
}
}
(via Introduction to Programmin...
Detect all changes to a (immediately) using JQuery
..."propertychange change click keyup input paste", function(event){
// If value has changed...
if (elem.data('oldVal') != elem.val()) {
// Updated stored value
elem.data('oldVal', elem.val());
// Do action
....
}
});
});
...
How to determine device screen size category (small, normal, large, xlarge) using code?
...
You can use the Configuration.screenLayout bitmask.
Example:
if ((getResources().getConfiguration().screenLayout &
Configuration.SCREENLAYOUT_SIZE_MASK) ==
Configuration.SCREENLAYOUT_SIZE_LARGE) {
// on a large screen device ...
}
...
How do you test private methods with NUnit?
...ping" algorithm that happens in between the private and the public meaning if I were to Unit Test the public, it would actually be an integration test. In this scenario I think it trying to write the test points to a design problem in the code. in which case I should probably create a different clas...
How to catch curl errors in PHP
...
You can use the curl_error() function to detect if there was some error. For example:
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $your_url);
curl_setopt($ch, CURLOPT_FAILONERROR, true); // Required for HTTP error codes to be reported via our call to curl_error($ch)
...
How to run multiple .BAT files within a .BAT file
... backward compatibility therefore is the reason for this behaviour.
Tips
If your batch files have spaces in their names, use quotes around the name:
call "unit tests.bat"
By the way: if you do not have all the names of the batch files, you could also use for to do this (it does not guarantee th...
How do you log all events fired by an element in jQuery?
....log(e);
});
That will get you a lot (but not all) of the information on if an event is fired... other than manually coding it like this, I can't think of any other way to do that.
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How do you calculate log base 2 in Java for integers?
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If you are thinking about using floating-point to help with integer arithmetics, you have to be careful.
I usually try to avoid FP calculations whenever possible.
Floating-point operations are not exact. You can never know ...