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Images can't contain alpha channels or transparencies
... in Photos app (the old iPhoto), then simply drag it from the album to desktop. Then control-click (right-click when mouse) the duplicated photo and select Preview.app under Open With menu).
2- Select Export... under File menu, and after selecting the destination, uncheck Alpha at the bottom, and c...
ReactJS Two components communicating
...now.
React
Parent / Child direct communication
const Child = ({fromChildToParentCallback}) => (
<div onClick={() => fromChildToParentCallback(42)}>
Click me
</div>
);
class Parent extends React.Component {
receiveChildValue = (value) => {
console.log("Parent re...
Javascript swap array elements
...able.
var b = list[y];
list[y] = list[x];
list[x] = b;
Edit hijacking top answer 10 years later with a lot of ES6 adoption under our belts:
Given the array arr = [1,2,3,4], you can swap values in one line now like so:
[arr[0], arr[1]] = [arr[1], arr[0]];
This would produce the array [2,1,3,...
How to simulate a touch event in Android?
...
ok.. what about swipe gesture left, right, top and bottom.. using ACTION_MOVE how to do this ?
– Ramesh_D
Apr 2 '17 at 12:23
...
Handlebars/Mustache - Is there a built in way to loop through the properties of an object?
...ach this}}. Your choice of terms is also confusing (what makes one object "top level" and another not? what are "pre-defined" keys exactly? etc), so you might want to revisit these concepts.
– Jon
Feb 11 '14 at 9:42
...
How do I make UILabel display outlined text?
...he left and right edges of each letter in the text but not outlines at the top or bottom. Any ideas?
– Mike Hershberg
Jan 26 '11 at 7:39
...
How to exit from Python without traceback?
...off traceback, simply use:
sys.trackbacklimit=0
You can set this at the top of your script to squash all traceback output, but I prefer to use it more sparingly, for example "known errors" where I want the output to be clean, e.g. in the file foo.py:
import sys
from subprocess import *
try:
c...
How to concatenate properties from multiple JavaScript objects
... i = 0, len = array.length; i < len; ++i) that I can't remember off the top of my head why I started doing it.
– tvanfosson
Mar 16 '10 at 12:47
...
How can I wrap text in a label using WPF?
...="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Label}">
<Border BorderBrush="{TemplateBinding BorderBrus...
“Bitmap too large to be uploaded into a texture”
...xus I get this error message and no image! It just seems ridiculous that a top-of-the-edge smartphone cannot display such a small image! My HTC Hero is capable of displaying that! What can I do?
– Zordid
Apr 26 '12 at 19:34
...