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Convert string to a variable name
...ign(varnames[1], read.csv(file_names[1]) # This will assign the variable
From there, if you try to print the variable varnames[1], it returns 'jan'.
To work around this, you need to do
print(get(varnames[1]))
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Haskell, Lisp, and verbosity [closed]
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From Conor McBride, quoted by Don Stewart: 'I like to think of types as warping our gravity, so that the direction we need to travel [to write correct programs] becomes "downhill".' The type system makes it surprisingly easy...
Vim: Creating parent directories on save
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Note the conditions: expand("<afile>")!~#'^\w\+:/' will prevent vim from creating directories for files like ftp://* and !isdirectory will prevent expensive mkdir call.
Update: sligtly better solution that also checks for non-empty buftype and uses mkdir():
function s:MkNonExDir(file, buf)
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Do something if screen width is less than 960 px
...n't know what you mean by 'clear' an event so I went with preventing event from firing again.
– jk.
Sep 2 '12 at 14:42
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If isset $_POST
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From php.net, isset
Returns TRUE if var exists and has value other than NULL, FALSE
otherwise.
empty space is considered as set. You need to use empty() for checking all null options.
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CSS for grabbing cursors (drag & drop)
...e URL above. Make sure it is a PNG transparent image. If not, download one from google.
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No newline at end of file
... data which isn't human-readable).
Because of this convention, many tools from that era expect the ending newline, including text editors, diffing tools, and other text processing tools. Mac OS X was built on BSD Unix, and Linux was developed to be Unix-compatible, so both operating systems have in...
How can I check if a view is visible or not in Android? [duplicate]
...int of confusion is the imageView.getLocalVisibleRect(scrollBounds) call. From grepcode: public final boolean getLocalVisibleRect(Rect r) { Point offset = new Point(); if (getGlobalVisibleRect(r, offset)) { r.offset(-offset.x, -offset.y); // make r local retu...
Is CSS Turing complete?
...ugfix infinite 1s;
margin: 0.5em 1em;
}
@-webkit-keyframes bugfix { from { padding: 0; } to { padding: 0; } }
/*
* 111 110 101 100 011 010 001 000
* 0 1 1 0 1 1 1 0
*/
body > input {
-webkit-appearance: none;
display: block;
float: left;
borde...
How to get URL of current page in PHP [duplicate]
..., or $_SERVER['SCRIPT_FILENAME']. The latter 2 give you the complete path (from the root of the server), rather than just the root of your website. They are useful for includes and such.
$_SERVER['PHP_SELF'] gives you the file name relative to the root of the website.
$relative_path = $_SERVER['P...