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Postgresql query between date ranges
... query my postgresql db to return results where a date is in certain month and year. In other words I would like all the values for a month-year.
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Using ChildActionOnly in MVC
...hen would you use the attribute ChildActionOnly ? What is a ChildAction and in what circumstance would you want restrict an action using this attribute?
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Get dimension from XML and set text size in runtime
...d May 23 '13 at 15:31
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Exploring Docker container's file system
I've noticed with docker that I need to understand what's happening inside a container or what files exist in there. One example is downloading images from the docker index - you don't have a clue what the image contains so it's impossible to start the application.
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Using the field of an object as a generic Dictionary key
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By default, the two important methods are GetHashCode() and Equals(). It is important that if two things are equal (Equals() returns true), that they have the same hash-code. For example, you might "return FooID;" as the GetHashCode() if you want that as the match. You can also im...
Get model's fields in Django
... in front of meta indicate that the _meta attribute is a private attribute and shouldn't be accessed directly? ... Because, for example, the layout of _meta could change in the future and not be a stable API?
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What command means “do nothing” in a conditional in Bash?
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The no-op command in shell is : (colon).
if [ "$a" -ge 10 ]
then
:
elif [ "$a" -le 5 ]
then
echo "1"
else
echo "2"
fi
From the bash manual:
: (a colon)
Do nothing beyond expanding arguments and performing redirections....
How to remove certain characters from a string in C++?
... How does this work? Is it not a double negative to use erase and remove? To me this reads: "erase the characters that are in positions where ()- aren't." And since each one is done at a time, shouldn't it remove ALL characters? I've read the documentation on both functions, and this ma...
Insert code into the page context using a content script
...e exposed page script directly, you have to use them in the content script and communicate to the exposed page script via a special DOM CustomEvent handler, example one and two. If you don't have to use chrome.* APIs, simply inject all of your JS code in the page by adding a <script> tag as sh...
How to get week number in Python?
...ndar() is an instance-method returning a tuple containing year, weeknumber and weekday in respective order for the given date instance.
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