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isset() and empty() - what to use
...y array)
var $var; (a variable declared, but without a value in a class)
From http://php.net/manual/en/function.empty.php
As mentioned in the comments the lack of warning is also important with empty()
PHP Manual says
empty() is the opposite of (boolean) var, except that no warning is
ge...
Express next function, what is it really for?
...route callback(s)." next(err) is used to jump to any "error middleware" (E from the post).
– Jonathan Lonowski
Oct 30 '12 at 7:53
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Print new output on same line [duplicate]
...
From help(print):
Help on built-in function print in module builtins:
print(...)
print(value, ..., sep=' ', end='\n', file=sys.stdout)
Prints the values to a stream, or to sys.stdout by default.
Optional keywor...
How do I install pip on macOS or OS X?
...t good for development. The version shipped with OS X may be
out of date from the official current Python release, which is
considered the stable production version. (source)
Homebrew is something of a package manager for OS X. Find more details on the Homebrew page. Once Homebrew is install...
Scraping html tables into R data frames using the XML package
...t;- unname(sapply(headers, function(x) x$children$text$value))
# Get rows from table
content <- c()
for(i in 2:length(thetable$children))
{
tablerow <- thetable$children[[i]]$children
opponent <- tablerow[[1]]$children[[2]]$children$text$value
others <- unname(sapply(tablerow[-...
Get first key in a (possibly) associative array?
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2019 Update
Starting from PHP 7.3, there is a new built in function called array_key_first() which will retrieve the first key from the given array without resetting the internal pointer. Check out the documentation for more info.
You can use ...
Abort Ajax requests using jQuery
...I cancel/abort an Ajax request that I have not yet received the response from?
17 Answers
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How to check if a file exists in the Documents directory in Swift?
... presumably those comments were that absoluteString doesn't work from a URL, but path does, which is what I found!
– CMash
Sep 27 '19 at 7:36
add a comment
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How to order events bound with jQuery
... implemented differently as of version 1.8. The following release note is from the jQuery blog:
.data(“events”): jQuery stores its event-related data in a data object
named (wait for it) events on each element. This is an internal data
structure so in 1.8 this will be removed from the u...
How to capture UIView to UIImage without loss of quality on retina display
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Switch from use of UIGraphicsBeginImageContext to UIGraphicsBeginImageContextWithOptions (as documented on this page). Pass 0.0 for scale (the third argument) and you'll get a context with a scale factor equal to that of the screen....