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Convert a list of data frames into one data frame
I have code that at one place ends up with a list of data frames which I really want to convert to a single big data frame.
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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...
What is non-blocking or asynchronous I/O in Node.js?
...gines, what is non-blocking I/O or asynchronous I/O? I see this being mentioned as an advantage over Java server side implementations.
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Git cherry pick vs rebase
...s obvious use.)
git cherry-pick is for bringing an interesting commit from one line of development to another. A classic example is backporting a security fix made on an unstable development branch to a stable (maintenance) branch, where a merge makes no sense, as it would bring a whole lot of unwa...
Regular expression to match numbers with or without commas and decimals in text
...t. I've found a few example regex's, which almost solve the problem, but none are perfect yet. The problem I have is that the numbers in my text may or may not have decimals and commas. For example:
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Match two strings in one line with grep
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the first option: piping one grep into a second does NOT produce an OR result it produces an AND result.
– masukomi
Oct 23 '15 at 16:56
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How many socket connections can a web server handle?
... read somewhere a server/machine can only handle 64,000 TCP connections at one time, is this true? How many could any type of hosting handle regardless of bandwidth? I'm assuming HTTP works over TCP.
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iTerm 2: How to set keyboard shortcuts to jump to beginning/end of line?
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To jump between words and start/end of lines in iTerm2 pick one of the two solutions below.
1. Simple solution (recommended)
Open Preferences
Click "Profile" tab
Select a profile in the list on the left (eg "Default") and click "Keys" tab
Click the "Presets" downdown and select "Na...
Process all arguments except the first one (in a bash script)
...atenate them for you; other commands might not be so nice. Don't just use one or the other: learn the difference between * and @, and when to use each. You should be using them about equally. A good example of when this will be a problem: if $3 contains a line break (\n), it will be replaced with...
Heroku 'Permission denied (publickey) fatal: Could not read from remote repository' woes
...ed up nothing, it's that my search turned up so many different solutions -none of which have worked.
14 Answers
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