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Scalar vs. primitive data type - are they the same thing?
...context (and frequently what language family is being discussed). To take one, possibly pathological, example: strings. In C, a string is a compound (an array of characters), while in Perl, a string is a scalar. In Java, a string is an object (or reference type). In Python, everything is (conceptua...
Copy values from one column to another in the same table
How can I make a copy values from one column to another? I have:
7 Answers
7
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How to remove an item for a OR'd enum?
... (&) with some value (let's call that value 'X') and the complement of one or more set bits (let's call those bits Q and their complement ~Q), the statement X & ~Q clears any bits that were set in Q from X and returns the result.
So to remove or clear the BLUE bits, you use the following st...
Custom domain for GitHub project pages
I have a gh-pages branch in one of my http://github.com repos. The GitHub project pages works fine if I go to http://myuser.github.com/myrepo
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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...
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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Copying a HashMap in Java
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If you want a copy of the HashMap you need to construct a new one with.
myobjectListB = new HashMap<Integer,myObject>(myobjectListA);
This will create a (shallow) copy of the map.
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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
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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 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...