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Extract every nth element of a vector
...eyond the seq solution already mentioned) is to use a short logical vector and use vector recycling:
foo[ c( rep(FALSE, 5), TRUE ) ]
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How to correctly sort a string with a number inside? [duplicate]
I have a list of strings containing numbers and I cannot find a good way to sort them.
For example I get something like this:
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Remove background drawable programmatically in Android
... In case that doesn't work: check if you've used the background property and not android:src!
– Chris Conway
Oct 16 '12 at 23:00
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Java split string to array [duplicate]
... as if by invoking the two-argument split method with the given expression and a limit argument of zero. Trailing empty strings are therefore not included in the resulting array.
If you want those trailing empty strings included, you need to use String.split(String regex, int limit) with a negativ...
What is this smiley-with-beard expression: “”?
...r 1 '13 at 0:56
R. Martinho FernandesR. Martinho Fernandes
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What's default HTML/CSS link color?
... a screenshot, and visiting a website like html-color-codes.info that will convert a screenshot to a color code.
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Javascript : Send JSON Object with Ajax?
...HttpRequest(); // new HttpRequest instance
xmlhttp.open("POST", "/json-handler");
xmlhttp.setRequestHeader("Content-Type", "application/json");
xmlhttp.send(JSON.stringify({name:"John Rambo", time:"2pm"}));
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Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
...always be the name of the executable? Or is this just a common convention and not guaranteed to be true 100% of the time?
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Understanding recursion [closed]
I'm having major trouble understanding recursion at school. Whenever the professor is talking about it, I seem to get it but as soon as I try it on my own it completely blows my brains.
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Import CSV to SQLite
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Here's how I did it.
Make/Convert csv file to be seperated by tabs (\t) AND not enclosed by any quotes (sqlite interprets quotes literally - says old docs)
Enter the sqlite shell of the db to which the data needs to be added
sqlite> .separator "\...