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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 ...
Relationship between SciPy and NumPy
...re describing is interesting, because both versions are coming from numpy. One is a ufunc, the other is a numpy.lib function. Why scipy is preferring the library function over the ufunc, I don't know off the top of my head.
EDIT: In fact, I can answer the log10 question. Looking in the scipy __in...
How to link to part of the same document in Markdown?
...as they please, which I found pretty simple. It should probably be git clone -ed into the lowest or outermost tmbundle directory, ~/Library/Application\ Support/TextMate/Bundles to simplify integration.
– applicative
May 14 '10 at 13:11
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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...
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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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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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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Insert multiple rows WITHOUT repeating the “INSERT INTO …” part of the statement?
I know I've done this before years ago, but I can't remember the syntax, and I can't find it anywhere due to pulling up tons of help docs and articles about "bulk imports".
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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...