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Storing WPF Image Resources
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If you will use the image in multiple places, then it's worth loading the image data only once into memory and then sharing it between all Image elements.
To do this, create a BitmapSource as a resource somewhere:
<Bitm...
How to get method parameter names?
... no metadata about their arguments. As a result, you will get a ValueError if you use inspect.getfullargspec() on a built-in function.
Since Python 3.3, you can use inspect.signature() to see the call signature of a callable object:
>>> inspect.signature(foo)
<Signature (a, b, c=4, *ar...
How can I get a view's current width and height when using autolayout constraints?
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The answer is [view layoutIfNeeded].
Here's why:
You still get the view's current width and height by inspecting view.bounds.size.width and view.bounds.size.height (or the frame, which is equivalent unless you're playing with the view.transform).
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Iterate over the lines of a string
...f f2(foo=foo):
retval = ''
for char in foo:
retval += char if not char == '\n' else ''
if char == '\n':
yield retval
retval = ''
if retval:
yield retval
def f3(foo=foo):
prevnl = -1
while True:
nextnl = foo.find('\n', prevnl ...
check if variable is dataframe
when my function f is called with a variable I want to check if var is a pandas dataframe:
2 Answers
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Rails detect if request was AJAX
In my action I wish to only respond with processing if it was called from an AJAX request. How do I check?
5 Answers
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Connection timeout for SQL server
Can I increase the timeout by modifying the connection string in the web.config ?
3 Answers
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Get current directory name (without full path) in a Bash script
... # ...useful to make hidden characters readable.
Note that if you're applying this technique in other circumstances (not PWD, but some other variable holding a directory name), you might need to trim any trailing slashes. The below uses bash's extglob support to work even with multip...
val-mutable versus var-immutable in Scala
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You should strive for referential transparency. What that means is that, if I have an expression "e", I could make a val x = e, and replace e with x. This is the property that mutability break. Whenever you need to make a design decision, maximize for referential transparency.
As a practical matt...
Mock vs MagicMock
...es all these protocol methods by creating new Mocks and
setting them, so if every new mock created a bunch of new mocks and
set those as protocol methods and then all of those protocol methods
created a bunch more mocks and set them on their protocol methods,
you've got infinite recursion......