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What are all the common ways to read a file in Ruby?
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One simple method is to use readlines:
my_array = IO.readlines('filename.txt')
Each line in the input file will be an entry in the array. The method handles opening and closing the file for you.
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How to avoid java.util.ConcurrentModificationException when iterating through and removing elements
I have an ArrayList that I want to iterate over. While iterating over it I have to remove elements at the same time. Obviously this throws a java.util.ConcurrentModificationException .
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How do you create optional arguments in php?
...t $timestamp = time(), and combined it with a null check. Literals include arrays (array() or []), booleans, numbers, strings, and null.
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Byte[] to InputStream or OutputStream
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You create and use byte array I/O streams as follows:
byte[] source = ...;
ByteArrayInputStream bis = new ByteArrayInputStream(source);
// read bytes from bis ...
ByteArrayOutputStream bos = new ByteArrayOutputStream();
// write bytes to bos ...
b...
What are the “must have” jQuery plugins? [closed]
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LINQ let's you also work with in-memory objects and arrays. That's all this is for. It doesn't actually talk to databases on the server side.
– Hugoware
Nov 6 '08 at 5:09
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Calling closure assigned to object property directly
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{
public function __call($method, $args)
{
if(is_callable(array($this, $method))) {
return call_user_func_array($this->$method, $args);
}
// else throw exception
}
}
$foo = new Foo;
$foo->cb = function($who) { return "Hello $who"; };
echo $foo-...
How to print the values of slices
... the %v, %+v or %#v verbs of go fmt:
fmt.Printf("%v", projects)
If your array (or here slice) contains struct (like Project), you will see their details.
For more precision, you can use %#v to print the object using Go-syntax, as for a literal:
%v the value in a default format.
when printin...
What does the variable $this mean in PHP?
...ts
print gettype($this); //Object, $this is an object
print is_array($this); //false, $this isn't an array
print get_object_vars($this); //true, $this's variables are an array
print is_object($this); //true, $this is still an object
print get_class($this); ...
How can I use “.” as the delimiter with String.split() in java [duplicate]
...ith the .split() method. If you run this code the way it is, you will get ArrayOutOfBounds, but if you change the delimiter from "." to anything else, the code works. But I need to lines parsed by "." so is there another way I could accomplish this?
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Javascript reduce() on Object
There is nice Array method reduce() to get one value from the Array. Example:
13 Answers
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