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What is the difference between JVM, JDK, JRE & OpenJDK?
...Machine (JVM) is the virtual machine that runs the Java bytecodes. The JVM doesn't understand Java source code; that's why you need compile your *.java files to obtain *.class files that contain the bytecodes understood by the JVM. It's also the entity that allows Java to be a "portable language" (w...
Which is better option to use for dividing an integer number by 2?
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While the definition of / is implementation (does if round up or down for negative numbers) defined in early C standards. It must always be consistent with % (modulo/remainder operator).
– ctrl-alt-delor
May 21 '12 at 11:42
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Expression Versus Statement
...which evaluates to a value. Example: 1+2/x
Statement: A line of code which does something. Example: GOTO 100
In the earliest general-purpose programming languages, like FORTRAN, the distinction was crystal-clear. In FORTRAN, a statement was one unit of execution, a thing that you did. The only reas...
XML parsing of a variable string in JavaScript
... = $(xml).find("album").text();
Note: As pointed out in comments; jQuery does not really do any XML parsing whatsoever, it relies on the DOM innerHTML method and will parse it like it would any HTML so be careful when using HTML element names in your XML. But I think it works fairly good for simpl...
ASP.NET MVC: No parameterless constructor defined for this object
...g a similar error. It turns out my model which it is attempting to bind to does not have a parameterless constructor!
– Tim
Oct 6 '11 at 0:48
1
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How to change the background color of the options menu?
...umption and led to a NullPointerException.
My slightly refined hack below does not rely on this assumption.
Furthermore, the hacks also rely on using an internal, undocumented class name "com.android.internal.view.menu.IconMenuItemView" as a string (not as a Java type). I do not see any way to av...
What are the rules for calling the superclass constructor?
... When you instantiate a SubClass object by, say, SubClass anObject(1,2), does 1 then get passed to SuperClass(foo) (becomes the argument to paramater foo)? I have been searching through docs high and low, but none definitively state that the arguments to the SubClass constructor can be passed as a...
Insert line break inside placeholder attribute of a textarea?
I have tried a few approaches but none worked. Does anyone know a the nifty trick to get around this?
21 Answers
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Round to at most 2 decimal places (only if necessary)
...9999999) evaluates to 100, whereas Math.round(100.5) evaluates to 101. IE9 does the same thing. This is due to floating point weirdness in javascript
– stinkycheeseman
Jul 26 '13 at 17:32
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How do I set the value property in AngularJS' ng-options?
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Your example doesn't fill value attribute of option. It defines what would be stored in the model of <select> element. See difference between obj.value as obj.text and obj.text
– Artem Andreev
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