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Android: Rotate image in imageview by an angle
...t) angle, pivotX, pivotY);
imageView.setImageMatrix(matrix);
This method does not require creating a new bitmap each time.
NOTE: To rotate an ImageView on ontouch at runtime you can
set onTouchListener on ImageView & rotate it by adding last two
lines(i.e. postRotate matrix & set...
Convert python datetime to epoch with strftime
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If you want to convert a python datetime to seconds since epoch you could do it explicitly:
>>> (datetime.datetime(2012,04,01,0,0) - datetime.datetime(1970,1,1)).total_seconds()
1333238400.0
In Python 3.3+ you can use timestamp() instead:
>>> datetime.datetime(2012,4,1,0,0).ti...
How to prevent IFRAME from redirecting top-level window
...E inside an parent page P some Javascript in A redirects the outer window to A .
9 Answers
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Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
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Your second example does not work if you send the argument by reference. Did you mean
void copyVecFast(vec<int> original) // no reference
{
vector<int> new_;
new_.swap(original);
}
That would work, but an easier way is
vec...
IntelliJ show JavaDocs tooltip on mouse over
...a method, variable, etc. a tooltip is displayed with the corresponding JavaDocs. Is there such a feature in IntelliJ?
21 An...
Convert NaN to 0 in javascript
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You can do this:
a = a || 0
...which will convert a from any "falsey" value to 0.
The "falsey" values are:
false
null
undefined
0
"" ( empty string )
NaN ( Not a Number )
Or this if you prefer:
a = a ? a : 0;
...which wi...
MySQL 'create schema' and 'create database' - Is there any difference
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The documentation of MySQL says :
CREATE DATABASE creates a database
with the given name. To use this
statement, you need the CREATE
privilege for the database. CREATE
SCHEMA is a synonym for CREATE
DATABASE as of ...
Retrieve a Fragment from a ViewPager
...on would be to maybe wrap the Fragment in a WeakReference to guarantee you don't prevent a destroyed fragment from being garbage collected? Just seems like the right thing to do...
– Alex Lockwood
Mar 11 '13 at 16:58
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Click event doesn't work on dynamically generated elements [duplicate]
...button. I also defined a click event associated with test . But the event doesn't work.
20 Answers
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What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?
What is the difference between the COPY and ADD commands in a Dockerfile, and when would I use one over the other?
13 A...