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Should I instantiate instance variables on declaration or in the constructor?
...
I got burned in an interesting way today:
class MyClass extends FooClass {
String a = null;
public MyClass() {
super(); // Superclass calls init();
}
@Override
protected void init() {
super.init();
if (something)
a = getStringY...
C# vs Java Enum (for those new to C#)
...r even if i am a fan of java. C# supports easy integer declaration such as FOO = 0 which is easier to use in ORM tools (no error prone ordinal() usage necessary). Further C# supports bitwise enumerations which are often very usefull, especially in combination with EntityFramework. Java should extend...
When should use Readonly and Get only properties
...e construction of an object (in the constructor).
private string _name = "Foo"; // field for property Name;
private bool _enabled = false; // field for property Enabled;
public string Name{ // This is a readonly property.
get {
return _name;
}
}
public bool Enabled{ // This is a read- a...
How to add a line break in C# .NET documentation
..., it's working :)
/// <summary>
/// Value: 0/1/2
/// <para/>0 foo,
/// <para/>1 bar,
/// <para/>2 other
/// </summary>
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Is there a way to escape a CDATA end token in xml?
...u'll probably use a DOM method, e.g.:
XmlElement elm = doc.CreateElement("foo");
elm.InnerText = "<[CDATA[[Is this a problem?]]>";
And the DOM quite reasonably escapes the < and the >, which means that you haven't inadvertently embedded a CDATA section in your document.
Oh, and this ...
What does the “@” symbol do in Powershell?
...n array, even if a singleton or a null, e.g. $a = @(ps | where name -like 'foo')
Hash initializer (see about_hash_tables)
Initializes a hash table with key-value pairs, e.g.
$HashArguments = @{ Path = "test.txt"; Destination = "test2.txt"; WhatIf = $true }
Splatting (see about_splatting)
Let's ...
Aliases in Windows command prompt
...- set window's title, colors, etc).
cmd.exe /K env.cmd
env.cmd:
title "Foo Bar"
doskey np=notepad++.exe $*
...
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What Automatic Resource Management alternatives exist for Scala?
...in)
}
def main(args:Array[String]): Unit = {
using(new FileInputStream("foo.txt"), new FileOutputStream("bar.txt")) {
in => out =>
Iterator continually { in.read() } takeWhile( _ != -1) foreach {
out.write(_)
}
}
}
...
Ruby max integer
...e. 64- or 32-bit, I found this trick at ruby-forum.com:
machine_bytes = ['foo'].pack('p').size
machine_bits = machine_bytes * 8
machine_max_signed = 2**(machine_bits-1) - 1
machine_max_unsigned = 2**machine_bits - 1
If you are looking for the size of Fixnum objects (integers small enough to sto...
How do I “source” something in my .vimrc file?
I've been working on expanding my vim-foo lately and I've run across a couple of plugins ( autotag.vim for example) that require them to be "sourced" in my .vimrc file. What exactly does this mean and how do I do it?
...