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ANTLR: Is there a simple example?
...org.antlr.runtime.*;
public class ANTLRDemo {
public static void main(String[] args) throws Exception {
ANTLRStringStream in = new ANTLRStringStream("12*(5-6)");
ExpLexer lexer = new ExpLexer(in);
CommonTokenStream tokens = new CommonTokenStream(lexer);
ExpParser...
jQuery get textarea text
...ry -- what if the user types over some "output" ), or trying to build up a string from keystroke events ( foolish to try -- what about backspaces, etc? ).
– Nick Perkins
Aug 1 '11 at 23:22
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How do I add a bullet symbol in TextView?
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This worked for me:
<string name="text_with_bullet">Text with a \u2022</string>
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Which annotation should I use: @IdClass or @EmbeddedId
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@Entity
@IdClass(PhonePK.class)
public class Phone {
@Id
private String type;
@ManyToOne
@Id
@JoinColumn(name="OWNER_ID", referencedColumnName="EMP_ID")
private Employee owner;
...
}
Example JPA 2.0 id class
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public class PhonePK {
private String type;
pr...
Difference between declaring variables before or in loop?
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Instead of Double, if it deals with String, still the case "b" better?
– Antoops
Feb 24 '14 at 12:00
5
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Check if inputs are empty using jQuery
...And you don't necessarily need .length or see if it's >0 since an empty string evaluates to false anyway but if you'd like to for readability purposes:
$('#apply-form input').blur(function()
{
if( $(this).val().length === 0 ) {
$(this).parents('p').addClass('warning');
}
});
If...
What's the strangest corner case you've seen in C# or .NET? [closed]
...where T : new()
{
T t = new T();
Console.WriteLine(t.ToString()); // works fine
Console.WriteLine(t.GetHashCode()); // works fine
Console.WriteLine(t.Equals(t)); // works fine
// so it looks like an object and smells like an object...
// but this...
Where are shared preferences stored?
...ackage name, although I see mixed uses of /<package>_preferences.xml and /<package>.xml on devices. Perhaps it depends on the API level of the app?
– Aleadam
May 27 '11 at 0:12
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How to turn off the Eclipse code formatter for certain sections of Java code?
I've got some Java code with SQL statements written as Java strings (please no OR/M flamewars, the embedded SQL is what it is - not my decision).
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Blocks and yields in Ruby
...Or, we can also provide a custom sort algorithm, for instance based on the string size:
days.sort do |x,y|
x.size <=> y.size
end
=> ["monday", "friday", "tuesday", "thursday", "wednesday"]
I hope this helps you to understand it better.
BTW, if the block is optional you should cal...