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How to detect if a variable is an array
...ng() (this is guaranteed to work by ECMA-262):
Object.prototype.toString.call(obj) === '[object Array]'
Both methods will only work for actual arrays and not array-like objects like the arguments object or node lists. As all array-like objects must have a numeric length property, I'd check for th...
Optional Parameters in Go?
...ety of
methods with the same name but
different signatures was occasionally
useful but that it could also be
confusing and fragile in practice.
Matching only by name and requiring
consistency in the types was a major
simplifying decision in Go's type
system.
...
Ruby Regexp group matching, assign variables on 1 line
...;.*)/i =~ string
puts one, two, three
It doesn't work if you reverse the order of string and the regex.
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Removing nan values from an array
... If you're using numpy both my answer and that by @lazy1 are almost an order of magnitude faster than the list comprehension - lazy1's solution is slightly faster (though technically will also not return any infinity values).
– jmetz
Jul 24 '12 at 13:54
...
Android Fatal signal 11 (SIGSEGV) at 0x636f7d89 (code=1). How can it be tracked down?
...e NDK documents. Ever since the release NDK-r6, it has provided a utility called ndk-stack.
Following is the content from official NDK documents with the NDK-r9 tar ball.
Overview:
ndk-stack is a simple tool that allows you to filter stack traces as they appear in the output of 'adb logcat' and r...
Align button at the bottom of div using CSS
...eenshot:
Useful Resources:
Specs
MDN
CSS Tricks
* {box-sizing: border-box;}
body {
background: linear-gradient(orange, yellow);
font: 14px/18px Arial, sans-serif;
margin: 0;
}
.container {
justify-content: space-between;
flex-direction: column;
height: 100vh;
displ...
How to install ia32-libs in Ubuntu 14.04 LTS (Trusty Tahr)
...
Or if you want to install the whole ia32-lib instead, try the following order:
sudo -i
cd /etc/apt/sources.list.d
echo "deb http://old-releases.ubuntu.com/ubuntu/ raring main restricted universe multiverse" >ia32-libs-raring.list
apt-get update
apt-get install ia32-libs
PS: In this way, y...
How many threads can a Java VM support?
...ts.
There are several parameters here. The specific VM, plus there are usually run-time parameters on the VM as well. That's somewhat driven by the operating system: what support does the underlying OS have for threads and what limitations does it put on them? If the VM actually uses OS-level thr...
abort: no username supplied (see “hg help config”)
...
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Manually adding a Userscript to Google Chrome
Instead of "installing" User-Scripts I found many tutorials on the web to add it manually. All of them told me to do the same steps:
...