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UIView Hide/Show with animation
...
Objective C
[UIView transitionWithView:button
duration:0.4
options:UIViewAnimationOptionTransitionCrossDissolve
animations:^{
button.hidden = YES;
}
completion:NULL];
Swift
UIView.transitio...
How can I apply a function to every row/column of a matrix in MATLAB?
...m the columns of a matrix M. You can do this simply using sum:
M = magic(10); %# A 10-by-10 matrix
columnSums = sum(M, 1); %# A 1-by-10 vector of sums for each column
And here is how you would do this using the more complicated num2cell/cellfun option:
M = magic(10); ...
How do I interpret precision and scale of a number in a database?
...
406
Numeric precision refers to the maximum number of digits that are present in the number.
ie 1...
.NET 4.0 has a new GAC, why?
...the new GAC . Does it mean now we have to manage two GACs, one for .NET 2.0-3.5 applications and the other for .NET 4.0 applications?
...
What is the result of % in Python?
...
310
The % (modulo) operator yields the remainder from the division of the first argument by the s...
How do I draw a grid onto a plot in Python?
...lot using pylab in Python and now I would like to superimpose a grid of 10x10 onto the scatter plot. How do I do that?
5 ...
Why does Lua have no “continue” statement?
...Lua 5.2 the best workaround is to use goto:
-- prints odd numbers in [|1,10|]
for i=1,10 do
if i % 2 == 0 then goto continue end
print(i)
::continue::
end
This is supported in LuaJIT since version 2.0.1
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How best to include other scripts?
... one another.
That way I can use dirname:
#!/bin/sh
my_dir="$(dirname "$0")"
"$my_dir/other_script.sh"
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What are “named tuples” in Python?
...xcept that they are immutable. They were added in Python 2.6 and Python 3.0, although there is a recipe for implementation in Python 2.4.
For example, it is common to represent a point as a tuple (x, y). This leads to code like the following:
pt1 = (1.0, 5.0)
pt2 = (2.5, 1.5)
from math import s...
Draw in Canvas by finger, Android
...
+200
Start By going through the Fingerpaint demo in the sdk sample.
Another Sample:
public class MainActivity extends Activity {
D...