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Design patterns or best practices for shell scripts [closed]
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I wrote quite complex shell scripts and my first suggestion is "don't". The reason is that is fairly easy to make a small mistake that hinders your script, or even make it dangerous.
That said, I don't have other resources to pass you but my pe...
Enterprise Library Unity vs Other IoC Containers [closed]
...rieval can be negated by using the CommonServiceLocator: http://www.codeplex.com/CommonServiceLocator
That leaves us with initialization, which is done in two ways: via code or via XML configuration (app.config/web.config/custom.config). Some support both, some support only one. I should note: so...
Resolve promises one after another (i.e. in sequence)?
...ibraries (like when and Bluebird) you have utility methods for this.
For example, Bluebird would be:
var Promise = require("bluebird");
var fs = Promise.promisifyAll(require("fs"));
var readAll = Promise.resolve(files).map(fs.readFileAsync,{concurrency: 1 });
// if the order matters, you can use ...
How does the String class override the + operator?
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Let's look at the following simple expressions in Java
int x=15;
String temp="x = "+x;
The compiler converts "x = "+x; into a StringBuilder internally and uses .append(int) to "add" the integer to the string.
5.1.11. String Conversion
Any type may be c...
Capitalize the first letter of both words in a two word string
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The base R function to perform capitalization is toupper(x). From the help file for ?toupper there is this function that does what you need:
simpleCap <- function(x) {
s <- strsplit(x, " ")[[1]]
paste(toupper(substring(s, 1,1)), substring(s, 2),
sep="", collapse="...
Favicon dimensions? [duplicate]
I have a favicon with the dimensions of height=26px / width=20px named favicon.png
10 Answers
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What do ellipsis […] mean in a list?
...t's not really infinite. And no, it's not really useful besides a thought experiment :)
– Óscar López
Jun 18 '13 at 3:44
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What is recursion and when should I use it?
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Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
...ewer surprises and is generally safer to use. But it is not portable - POSIX doesn't specify what it does and only some shells support it (beside bash, I heard ksh supports it too). For example, you can do
[[ -e $b ]]
to test whether a file exists. But with [, you have to quote $b, because it sp...
How to test if list element exists?
I would like to test if an element of a list exists, here is an example
7 Answers
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