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What happens when a duplicate key is put into a HashMap?
...e times to HashMap ’s put method, what happens to the original value? And what if even the value repeats? I didn’t find any documentation on this.
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Round a double to 2 decimal places [duplicate]
... too.
So, use this instead
(Adapted from this answer by Louis Wasserman and this one by Sean Owen.)
public static double round(double value, int places) {
if (places < 0) throw new IllegalArgumentException();
BigDecimal bd = BigDecimal.valueOf(value);
bd = bd.setScale(places, Rou...
Shortest distance between a point and a line segment
...t notice someone had supplied a 3D version. @RogiSolorzano, you'll need to convert the lat,long coordinates into x,y,z coordinates in 3-space first.
– Grumdrig
Dec 24 '17 at 5:42
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What is Unicode, UTF-8, UTF-16?
...o input/output something other than the default encoding, you will have to convert it first.
Recommended/default/dominant encodings: When given a choice of which UTF to use, it is usually best to follow recommended standards for the environment you are working in. For example, UTF-8 is dominant on ...
How to play with Control.Monad.Writer in haskell?
I'm new to functional programming and recently learning at Learn You a Haskell , but when I went through this chapter , I got stuck with the program below:
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What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?
...lternate universes, please add that spl_autoload very, um, "helpfully" (?) converts all filenames to lowercase (see my comment to @user below). Can't use spl_autoload_register() vanilla if you like your CapitalLettersAndStuff.
– Just Plain High
Nov 28 '13 at 4:...
How to detect the currently pressed key?
...u haven't answered the question properly. The OP is asking about all keys and used the Shift key as an example only. So how do you detect other keys such as A to Z, 0 to 9 etc.
– Ash
Dec 18 '09 at 10:03
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bool operator ++ and --
... supports ++ (increment) for bool, but not -- (decrement). It this just a random decision, or there is some reason behind this?
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What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]
...ecutionEngineError exception. I spent a good 30 minutes trying to isolate and minimize the culprit sample. Compile this using Visual Studio 2012 as a console app:
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Adding placeholder text to textbox
...;
myTxtbx.Text = "Enter text here...";
myTxtbx.GotFocus += GotFocus.EventHandle(RemoveText);
myTxtbx.LostFocus += LostFocus.EventHandle(AddText);
public void RemoveText(object sender, EventArgs e)
{
if (myTxtbx.Text == "Enter text here...")
{
myTxtbx.Text = "";
}
}
public void A...