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CSS Child vs Descendant selectors
...gt;<table><tr><td><p> <!...
The first one is called descendant selector and the second one is called child selector.
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Error message “No exports were found that match the constraint contract name”
...}\AppData\Local
For those who have multiple versions of Visual Studio installed, e.g. 2012 and 2013, it might help to remove the ComponentModelCache for both versions before restarting Visual Studio, e.g. 11.0 and 12.0.
sha...
How do I get a background location update every n minutes in my iOS application?
...d with UIApplication:beginBackgroundTaskWithExpirationHandler:
When n is smaller than UIApplication:backgroundTimeRemaining it will work just fine. When n is larger, the location manager should be enabled (and disabled) again before there is no time remaining to avoid the background task being kille...
When to use: Java 8+ interface default method, vs. abstract method
Java 8 allows for default implementation of methods in interfaces called Default Methods .
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How to copy DLL files into the same folder as the executable using CMake?
...the configuration type into the path to the dll in the add_custom_command call, like this:
add_custom_command(TARGET MyTest POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_directory
"${PROJECT_SOURCE_DIR}/libs/$<CONFIGURATION>"
$<TARGET_FILE_DIR:MyTest>)
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Purpose of memory alignment
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It's a limitation of many underlying processors. It can usually be worked around by doing 4 inefficient single byte fetches rather than one efficient word fetch, but many language specifiers decided it would be easier just to outlaw them and force everything to be aligned.
There is ...
How Do I Fetch All Old Items on an RSS Feed?
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RSS/Atom feeds does not allow for historic information to be retrieved. It is up to the publisher of the feed to provide it if they want such as in the blogger or wordpress examples you gave above.
The only reason that Google Reader has more inform...
Difference between HBase and Hadoop/HDFS
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Hadoop is basically 3 things, a FS (Hadoop Distributed File System), a computation framework (MapReduce) and a management bridge (Yet Another Resource Negotiator). HDFS allows you store huge amounts of data in a distributed (provides faster...
What's the difference between JavaScript and JScript?
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Just different names for what is really ECMAScript. John Resig has a good explanation.
Here's the full version breakdown:
IE 6-7 support JScript 5 (which is equivalent to ECMAScript 3, JavaScript 1.5)
IE 8 supports JScript 6 (which is equivalent to ECMAScri...
Pros and cons to use Celery vs. RQ [closed]
...ven be inaccurate on some points.
In short, RQ is designed to be simpler all around. Celery is designed to be more robust. They are both excellent.
Documentation. RQ's documentation is comprehensive without being complex, and mirrors the project's overall simplicity - you never feel lost or con...