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How can I multiply and divide using only bit shifting and adding?
...d back again. This is also why multiplication takes longer than bit shifts or adding - it's O(n^2) rather than O(n) in the number of bits. Real computer systems (as opposed to theoretical computer systems) have a finite number of bits, so multiplication takes a constant multiple of time compared to ...
How to install multiple python packages at once using pip
I know it's an easy way of doing it but i didn't find it neither here nor on google.
So i was curious if there is a way to install multiple packages using pip.
Something like:
...
How to check if BigDecimal variable == 0 in java?
...on.
FYI, BigDecimal also has constants BigDecimal.ONE and BigDecimal.TEN for your convenience.
Note!
The reason you can't use BigDecimal#equals() is that it takes scale into consideration:
new BigDecimal("0").equals(BigDecimal.ZERO) // true
new BigDecimal("0.00").equals(BigDecimal.ZERO) // fal...
How do I use format() on a moment.js duration?
Is there any way I can use the moment.js format method on duration objects? I can't find it anywhere in the docs and it doesn't seen to be an attribute on duration objects.
...
Center a button in a Linear layout
...al screen. It has 1 button that is supposed to centre in the screen both horizontally and vertically. However no matter what I try to do the button will top align centre. I have included the XML below, can some one point me in the right direction?
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In Swift how to call method with parameters on GCD main thread?
...
While you are correct that your suggestion works, I think my answer is slightly better because it does not make a call to UIApplication.sharedApplication, which is unusual and might throw off other readers of my code. The scope of my answer...
How to change shape color dynamically?
...entDrawable bgShape = (GradientDrawable)btn.getBackground();
bgShape.setColor(Color.BLACK);
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How to remove all event handlers from an event
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I found a solution on the MSDN forums. The sample code below will remove all Click events from button1.
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
button1.Click += button1_Click;
button1.Clic...
How to append output to the end of a text file
...ot exist, it will be created.
Example:
$ echo "hello" > file
$ echo "world" >> file
$ cat file
hello
world
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Convert System.Drawing.Color to RGB and Hex Value
...only thing I can think of is that the try/catch blocks are redundant -- Color is a struct and R, G, and B are bytes, so c can't be null and c.R.ToString(), c.G.ToString(), and c.B.ToString() can't actually fail (the only way I can see them failing is with a NullReferenceException, and none of them c...