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How to get the last character of a string in a shell?
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That's one of the reasons why you need to quote your variables:
echo "${str:$i:1}"
Otherwise, bash expands the variable and in this case does globbing before printing out. It is also better to quote the parameter to the script (in ...
Mapping many-to-many association table with extra column(s)
...d decompose the many to many association between User and Service into two OneToMany associations : One User has many UserServices, and one Service has many UserServices.
You haven't shown us the most important part : the mapping and initialization of the relationships between your entities (i.e. t...
Best explanation for languages without null
...so often when programmers are complaining about null errors/exceptions someone asks what we do without null.
11 Answers
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What does 'predicate' mean in the context of computer science? [duplicate]
... I would change "to some extent" to "exactly the same", since one can either filter an element or not, which implies a boolean function, i.e. a predicate.
– Dimitris Andreou
Jul 24 '10 at 17:25
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What does the clearfix class do in css? [duplicate]
...fix, but it got its name from the version that's commonly being used - the one that uses the CSS property clear.
Examples
Here are several ways to do clearfix , depending on the browser and use case. One only needs to know how to use the clear property in CSS and how floats render in each browser ...
How to explain callbacks in plain english? How are they different from calling one function from ano
...to explain callbacks in plain English? How are they different from calling one function from another function taking some context from the calling function? How can their power be explained to a novice programmer?
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Using node.js as a simple web server
...top up the features with your own fork. You might find it's already been done in one of the existing 800+ forks of this project:
https://github.com/nodeapps/http-server/network
Light Server: An Auto Refreshing Alternative
A nice alternative to http-server is light-server. It supports file watc...
How do I remove a substring from the end of a string in Python?
...hink that the first example, with the endswith() test, would be the better one; the regex one would involve some performance penalty (parsing the regex, etc.). I wouldn't go with the rsplit() one, but that's because I don't know what you're exactly trying to achieve. I figure it's removing the .com ...
How to read integer value from the standard input in Java
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If you are using Java 6, you can use the following oneliner to read an integer from console:
int n = Integer.parseInt(System.console().readLine());
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How can I access Google Sheet spreadsheets only with Javascript?
...ormation about the official Google Docs API and how to use the spreadsheet one. Worth a look.
– Ape-inago
Apr 13 '14 at 4:05
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