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How to map with index in Ruby?
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IMO this is simpler and better-reading in 1.8.7+: arr.map.with_index{ |o,i| [o,i+2] }
– Phrogz
Jan 15 '11 at 2:43
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Where does the .gitignore file belong?
...Linux kernel source repository has 206 .gitignore files.
-- this is what i read from progit.pdf(version 2), P32
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Is it possible to view bytecode of Class file? [duplicate]
...te code level is possible. Have a look at BCEL, a java library designed to read, manipulate and write class files.
A list of tool and libraries to edit byte code can be found on java-net. For example JBE, a Java Byte Code editor that even comes with a GUI.
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Multiplication on command line terminal
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By the way (for future readers), my example should have shown non-integer operands instead of only a non-integer result in order to accurately counter the assertion. Never fear, echo '4 k 50.5 7 / p' | dc works (output: 7.2142).
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Check whether a string matches a regex in JS
...})$/)) {
alert("match!");
}
But test() seems to be faster as you can read here.
Important difference between match() and test():
match() works only with strings, but test() works also with integers.
12345.match(/^([a-z0-9]{5,})$/); // ERROR
/^([a-z0-9]{5,})$/.test(12345); // true
/^([a-z0-...
Ukkonen's suffix tree algorithm in plain English
...nsert the current final
character a at the root, we notice that there is already an outgoing
edge starting with a, specifically: abca. Here is what we do in
such a case:
We do not insert a fresh edge [4,#] at the root node. Instead we
simply notice that the suffix a is already in our
tree. It ends...
byte[] to file in Java
...esources statement to avoid leaking resources and make your code easier to read. More on that here.
To write your byteArray to a file you would do:
try (FileOutputStream fos = new FileOutputStream("fullPathToFile")) {
fos.write(byteArray);
} catch (IOException ioe) {
ioe.printStackTrace();...
What is path of JDK on Mac ? [duplicate]
...ualMachines/jdk1.7.0_25.jdk/Contents/Home/bin/java
and therefrom you can read the Java home directory;
if usr/bin/java points to another symbolic link, recursively apply the same approach with
ls -l <whatever the /usr/bin/java symlink points to>
An important variation is the setup you ...
Git error on git pull (unable to update local ref)
... is basically what you were saying although it wasn't obvious to me when I read this.
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Add up a column of numbers at the Unix shell
...rrect of course - it was easier just to append on to the end of what was already there :-)
– Greg Reynolds
Jun 1 '09 at 10:05
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