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Javascript parseInt() with leading zeros
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Calls to parseInt should always specify a base in the second argument:
parseInt("08", 10);
Earlier versions of JavaScript treat strings starting with 0 as octal (when no base is specified) and neither 08 nor 09 are valid o...
The current SynchronizationContext may not be used as a TaskScheduler
I am using Tasks to run long running server calls in my ViewModel and the results are marshalled back on Dispatcher using TaskScheduler.FromSyncronizationContext() . For example:
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What are fail-safe & fail-fast Iterators in Java
...terators provide weakly consistent rather than fast-fail traversal."
Typically, weak consistency means that if a collection is modified concurrently with an iteration, the guarantees of what the iteration sees are weaker. (The details will be specified in each concurrent collection classes javado...
Parallel foreach with asynchronous lambda
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@Afshin_Zavvar: If you call Task.Run without awaiting the result, then that's just throwing fire-and-forget work onto the thread pool. That is almost always a mistake.
– Stephen Cleary
May 10 '18 at 22:57
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How to add url parameters to Django template url tag?
...ccept the param in the regex:
(urls.py)
url(r'^panel/person/(?P<person_id>[0-9]+)$', 'apps.panel.views.person_form', name='panel_person_form'),
So you use this in your template:
{% url 'panel_person_form' person_id=item.id %}
If you have more than one param, you can change your regex and...
Extract traceback info from an exception object
...r first pointing this out.)
The nice way of solving this would be to surgically break the cycle after leaving the except clause, which is what Python 3 does. The Python 2 solution is much uglier: you are provided with an ad-hoc function,sys.exc_info(), which only works inside the except clause. It ...
SQLite - UPSERT *not* INSERT or REPLACE
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Assuming three columns in the table: ID, NAME, ROLE
BAD: This will insert or replace all columns with new values for ID=1:
INSERT OR REPLACE INTO Employee (id, name, role)
VALUES (1, 'John Foo', 'CEO');
BAD: This will insert or replace 2 of the column...
Ruby max integer
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Ruby automatically converts integers to a large integer class when they overflow, so there's (practically) no limit to how big they can be.
If you are looking for the machine's size, i.e. 64- or 32-bit, I found this trick at ruby-forum.c...
Convert Time from one time zone to another in Rails
... if we are configuring time zone in application.rb then no need to call ".in_time_zone". rails automatically do it for us jyst need to call Annotation.last.created_at
– Vishal
Oct 2 '19 at 7:40
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How to combine class and ID in CSS selector?
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div#content.myClass.aSecondClass.aThirdClass /* Won't work in IE6, but valid */
div.firstClass.secondClass /* ditto */
and, per your example:
div#content.sectionA
Edit, 4 years later: Since this is super old and people keep finding it: don't use the tagNames in your selectors. #content.myClass...