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Difference in Months between two dates in JavaScript
...e of 3 months. You can prevent this by setting the roundUpFractionalMonths param as true, so a 3 month and 1 day difference will be returned as 4 months.
The accepted answer above (T.J. Crowder's answer) isn't accurate, it returns wrong values sometimes.
For example, monthDiff(new Date('Jul 01, 20...
How to remove a key from Hash and get the remaining hash in Ruby/Rails?
... { a: true, b: false, c: nil}
#
# This is useful for limiting a set of parameters to everything but a few known toggles:
# @person.update(params[:person].except(:admin))
def except(*keys)
dup.except!(*keys)
end
# Replaces the hash without the given keys.
# hash = { a: true, b:...
How would you implement an LRU cache in Java?
...* <code>LinkedHashMap</code>.
* </p>
*
* @param eldest
* the <code>Entry</code> in question; this implementation doesn't care what it is, since the
* implementation is only dependent on the size of the cache
* @return ...
How does a PreparedStatement avoid or prevent SQL injection?
... statements you can force the user input to be handled as the content of a parameter (and not as a part of the SQL command).
But if you don't use the user input as a parameter for your prepared statement but instead build your SQL command by joining strings together, you are still vulnerable to SQL...
Converting Secret Key into a String and Vice Versa
...
public static SecretKey generateAESKey(int keysize)
throws InvalidParameterException {
try {
if (Cipher.getMaxAllowedKeyLength("AES") < keysize) {
// this may be an issue if unlimited crypto is not installed
throw new InvalidParameterException("Key siz...
Is it possible to pass a flag to Gulp to have it run tasks in different ways?
...ble anymore): https://github.com/gulpjs/gulp/blob/master/docs/recipes/pass-params-from-cli.md
Alternative with minimist
From Updated Ref: https://github.com/gulpjs/gulp/blob/master/docs/recipes/pass-arguments-from-cli.md
gulpfile.js
// npm install --save-dev gulp gulp-if gulp-uglify minimist
...
How can I pad a value with leading zeros?
...nd the -6,6 correspond to the pad width. Same idea but slice take one less param; not sure if slice is faster or slower than subtr. Of course my solution isn't needing variable assignment.
– slartibartfast
Mar 4 '14 at 7:41
...
Single vs Double quotes (' vs ")
...as JavaScript within an attribute, for example:
<button onClick='func("param");'>Press Me</button>
Of course if we are in PHP and want the parser to handle PHP variables within the string we should intentionally use double quotes. $a='Awesome'; $b = "Not $a";
Sources
Single quotes vs...
c# open file with default application and parameters
... file type e.g. '.pdf' in the registry, then put that name in the filename parameter. See stackoverflow.com/questions/162331/…
– Surfbutler
Jul 6 '12 at 16:38
...
Why is Java's AbstractList's removeRange() method protected?
...I quote it here:
There are three techniques for shortening overly long parameter lists. One is to break the method up into multiple methods, each of which requires only a subset of the parameters. If done carelessly, this can lead to too many methods, but it can also help reduce the method count...