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Python: Checking if a 'Dictionary' is empty doesn't seem to work
...e for statement. As a result, your code will process only one, arbitrarily selected key, if a key exists. If a key does not exist, the function will return None, which will be cast to boolean False. Ouch! All the empty dictionaries will be classified as false-nagatives.
If the dictionary is not emp...
How are zlib, gzip and zip related? What do they have in common and how are they different?
...ompressed output for the same input data, as evidenced by the existence of selectable compression levels that allow trading off compression effectiveness for CPU time. zlib and PKZIP are not the only implementations of deflate compression and decompression. Both the 7-Zip archiving utility and Googl...
Get name of currently executing test in JUnit 4
... if you don't want to remember it every time. This, of course, limits your selection of runners but that may be acceptable.
Also, it may take a little bit of kung fu to get the current test name out of the Runner and into your framework, but this at least gets you the name.
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Oracle SQL Developer multiple table views
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SQL Developer can start a new tab every time you select a database object to view; but, you will have to close the tab manually.
Set this in:
Tools->Preferences->Database->ObjectViewer->Automatically Freeze Object Viewer Windows
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Simple explanation of MapReduce?
...e reduced to a scalar value.
So if you think of it like a SQL statement
SELECT SUM(salary)
FROM employees
WHERE salary > 1000
GROUP by deptname
We can use map to get our subset of employees with salary > 1000
which map emits to the barrier into group size buckets.
Reduce will sum each of...
How do DATETIME values work in SQLite?
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select * from table where creation between a and b;
– koem
Jun 21 '13 at 4:07
add a comment
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How to differ sessions in browser-tabs?
...of accounts stored in cookies, google mail is just storing all cookies and select one according to the url.
– Mhmd
Oct 25 '14 at 0:57
5
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Handlebars/Mustache - Is there a built in way to loop through the properties of an object?
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EDIT: Handlebars now has a built-in way of accomplishing this; see the selected answer above.
When working with plain Mustache, the below still applies.
Mustache can iterate over items in an array. So I'd suggest creating a separate data object formatted in a way Mustache can work with:
var o ...
FontAwesome icons not showing. Why?
...your browsers cache. (On Chrome do a looong click on the reload button and select Hard Cache Reset)
Assure that the <span> or <i> element you use, uses the FontAwesome font family. For example, it must not just
<i class="fa-pencil" title="Edit"></i>
but
<i class="fa fa...
Xcode: Build Failed, but no error messages
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Actually, here select Show all issues, instead of "Show issues for active scheme only" and you're good. The new build system has a huge performance advantage over the old one with Swift projects.
– Charlie Monroe
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