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How do you check if a variable is an array in JavaScript? [duplicate]
...ys of checking if an variable is an array or not. The best solution is the one you have chosen.
variable.constructor === Array
This is the fastest method on Chrome, and most likely all other browsers. All arrays are objects, so checking the constructor property is a fast process for JavaScript en...
Various ways to remove local Git changes
I just cloned a git repository and checked out a branch. I worked on it, and then decided to remove all my local changes, as I wanted the original copy.
...
How to search and replace globally, starting from the cursor position and wrapping around the end of
...t, the substitution command is run for each line starting from
the current one until the end of file:
,$s/BEFORE/AFTER/gc
Then, that :substitute command is repeated with the same search
pattern, replacement string, and flags, using the :& command
(see :help :&):
1,''-&&
The latter...
Google Chrome form autofill and its yellow background
...me remembers some login/password it changes a background color to a yellow one.
28 Answers
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How to remove the first commit in git?
...ent branch.
If what you want is to merge the first commit with the second one, you can use the rebase command:
git rebase -i --root
A last way could be to create an orphan branch, a branch with the same content but without any commit history, and commit your new content on it:
git checkout --or...
Wrong Manifest.mf in IntelliJ IDEA created .jar
...
As noted in @grudolf's comment in one of the other answers, one way to do this (and the only one that worked for me in an imported Gradle project) is to create an empty jar as follows:
Project Structure -> Artifacts -> + Jar -> Empty
Centre pane no...
How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
... practical answer instead of just being told that it shouldn't / can't be done.
– dodgy_coder
Feb 22 '12 at 0:53
1
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What is the copy-and-swap idiom?
...ent operator is arguably the most nuanced and difficult. How should it be done? What pitfalls need to be avoided?
The copy-and-swap idiom is the solution, and elegantly assists the assignment operator in achieving two things: avoiding code duplication, and providing a strong exception guarantee.
H...
what is the difference between ajax and jquery and which one is better? [closed]
... using ajax or jquery so I want to know what the differences are and which one is better such as performance and complexity .
...
How to choose an AES encryption mode (CBC ECB CTR OCB CFB)?
...
ECB should not be used if encrypting more than one block of data with the same key.
CBC, OFB and CFB are similar, however OFB/CFB is better because you only need encryption and not decryption, which can save code space.
CTR is used if you want good parallelization (ie. sp...