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fatal: The current branch master has no upstream branch
...gular password won't work (for https url), as explained here or here.
Same problem if your password contains special character (as in this answer)
If https doesn't work (because you don't want to generate a secondary key, a PAT: personal Access Token), then you can switch to ssh, as I have shown...
How do I move a file with Ruby?
...eutils'
FileUtils.mv('/tmp/your_file', '/opt/new/location/your_file')
Remember; if you are moving across partitions, "mv" will copy the file to new destination and unlink the source path.
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Is there a difference between x++ and ++x in java?
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++x is called preincrement while x++ is called postincrement.
int x = 5, y = 5;
System.out.println(++x); // outputs 6
System.out.println(x); // outputs 6
System.out.println(y++); // outputs 5
System.out.println(y); // outputs 6
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Numbering rows within groups in a data frame
Working with a data frame similar to this:
7 Answers
7
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How to get value of selected radio button?
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var rates = document.getElementById('rates').value;
The rates element is a div, so it won't have a value. This is probably where the undefined is coming from.
The checked property will tell you whether the element is selected:
if (docume...
Transposing a 2D-array in JavaScript
I've got an array of arrays, something like:
23 Answers
23
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Length of a JavaScript object
...ipt that you don't add things to Object.prototype, because it can break enumerations in various libraries. Adding methods to Object is usually safe, though.
Here's an update as of 2016 and widespread deployment of ES5 and beyond. For IE9+ and all other modern ES5+ capable browsers, you can use O...
How to get a variable value if variable name is stored as string?
How can I retrieve a bash variable value if I have the variable name as string?
7 Answers
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Is char signed or unsigned by default?
In the book "Complete Reference of C" it is mentioned that char is by default unsigned.
7 Answers
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Error: free(): invalid next size (fast):
... on Ubuntu 10.10. It pops up randomly when I run the executable (maybe 2 times in 8 hours, with 10 compiles an hour). However, if I make clean and recompile it goes away most of the time.
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