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Lock, mutex, semaphore… what's the difference?
...ead termination notification, recursion?, 'priority inversion avoidance'?, etc].
4) And now, talking about 'spinlocks', first some definitions:
Critical Region= A region of memory shared by 2 or more processes.
Lock= A variable whose value allows or denies the entrance to a 'critical region'. (It...
Parsing JSON using Json.net
...n the format of the json is unknown.
* You can modify the delimiters, etc pretty easily in the source
* (sorry I didn't abstract it--I have a very specific use).
*/
public static Dictionary<string, string> jsonParse(string rawjson)
{
Dictionary<string, string...
STL or Qt containers?
What are the pros and cons of using Qt containers ( QMap , QVector , etc.) over their STL equivalent?
14 Answers
...
Very simple log4j2 XML configuration file using Console and File appender
...ver will occur at 4 am and then next
ones will occur at 8 am, noon, 4pm, etc.
Source: https://logging.apache.org/log4j/2.x/manual/appenders.html
Output:
[INFO ] 2018-07-21 12:03:47,412 ScenarioHook.beforeScenario() - Browser=CHROME32_NOHEAD
[INFO ] 2018-07-21 12:03:48,623 ScenarioHook.befo...
Bootstrap carousel multiple frames at once
..., does not add junk html, highly-configurable, responsive, mobile-friendly etc...
$('.multi-item-carousel').lightSlider({
item: 4,
pager: false,
autoWidth: false,
slideMargin: 0
});
share
|
...
Saving an Object (Data persistence)
...kler = pickle.Pickler(output, -1)
pickler.dump(obj1)
pickler.dump(obj2)
etc...
Note: If you're in an environment running different versions of Python, then you'll probably want to explicitly use (i.e. hardcode) a specific protocol number that all of them can read (later versions can generally r...
How do you validate a URL with a regular expression in Python?
...+ '-.') # and others?
assert pieces.scheme in ['http', 'https', 'ftp'] # etc.
It might be slower, and maybe you'll miss conditions, but it seems (to me) a lot easier to read and debug than a regular expression for URLs.
...
Inheriting class methods from modules / mixins in Ruby
...ans that you can dynamically create new classes, assign them to variables, etc.:
klass = Class.new do
def foo
"foo"
end
end
#=> #<Class:0x2b613d0>
klass.new.foo
#=> "foo"
Also in Ruby, you have the possibility of defining so-called singleton methods on objects. These methods ...
Using a ListAdapter to fill a LinearLayout inside a ScrollView layout
...tAdapter adapter = ... // Your adapter.
final int adapterCount = adapter.getCount();
for (int i = 0; i < adapterCount; i++) {
View item = adapter.getView(i, null, null);
layout.addView(item);
}
EDIT: I rejected this approach when I needed to display about 200 non-trivial list items, it is...
Are there good reasons not to use an ORM? [closed]
... to know the framework instead of knowing the SqlConnection’s exceptions etc.
– hangy
Oct 11 '08 at 14:59
4
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