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What is the difference between the kernel space and the user space?
What is the difference between the kernel space and the user space? Do kernel space, kernel threads, kernel processes and kernel stack mean the same thing? Also, why do we need this differentiation?
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How can I maintain fragment state when added to the back stack?
...return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm after the same thing as this question, but I've included a complete code sample to help root out the issue:
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Constantly print Subprocess output while process is running
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You can use iter to process lines as soon as the command outputs them: lines = iter(fd.readline, ""). Here's a full example showing a typical use case (thanks to @jfs for helping out):
from __future__ import print_function # Only Python 2.x
import subprocess
def execute(cmd):...
Angular js init ng-model from default values
... your Angular HTML templates, then pull down your values via $http in JSON and put them in your scope.
So if at all possible, do this:
app.controller('MyController', function($scope, $http) {
$http.get('/getCardInfo.php', function(data) {
$scope.card = data;
});
});
<input type=...
How to prevent the activity from loading twice on pressing the button
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In the button's event listener, disable the button and show another activity.
Button b = (Button) view;
b.setEnabled(false);
Intent i = new Intent(this, AnotherActitivty.class);
startActivity(i);
Override onResume() to re-enable the button.
@Override
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View the Task's activity stack
I just started developing a simple Android application while I'm still learning the platform.
9 Answers
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Define css class in django Forms
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Yet another solution that doesn't require changes in python code and so is better for designers and one-off presentational changes: django-widget-tweaks. Hope somebody will find it useful.
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Single huge .css file vs. multiple smaller specific .css files? [closed]
...liver a single, minimised CSS file for the site (which will be far smaller and faster than a normal single CSS source file), while maintaining the nicest development environment, with everything neatly split into components.
Sass and LESS have the added advantage of variables, nesting and other way...
iTerm 2: How to set keyboard shortcuts to jump to beginning/end of line?
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Do you know what the code/sequence for Command+Delete is? (clear out the prompt)
– Steven Lu
Mar 31 '13 at 18:37
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Big-oh vs big-theta [duplicate]
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Big-O is an upper bound.
Big-Theta is a tight bound, i.e. upper and lower bound.
When people only worry about what's the worst that can happen, big-O is sufficient; i.e. it says that "it can't get much worse than this". The tighter the bound the better, of course, but a tight bound isn't...