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Developing cross platform mobile application [closed]
...s but let me expand a bit:
I think that cross-platform tools have historically always been also-rans because such tools have the wrong philosophical focus.
All the selling points for cross-plaform tools are the benefits they bring to developers. They are sold on the idea that they allow the devel...
C++ equivalent of java's instanceof
...nceof) you'd better ask yourself whether it's a necessary thing. It's generally a sign of poor design.
Typical workarounds is putting the special behaviour for the class you are checking for into a virtual function on the base class or perhaps introducing something like a visitor where you can int...
python requests file upload
...ote the filename="file.txt" parameter.
You can use a tuple for the files mapping value, with between 2 and 4 elements, if you need more control. The first element is the filename, followed by the contents, and an optional content-type header value and an optional mapping of additional headers:
fil...
argparse: identify which subparser was used [duplicate]
... method on the sub parser to solve this problem.
For example, I've added calls to set_defaults() to your code:
import argparse
parser = argparse.ArgumentParser( version='pyargparsetest 1.0' )
subparsers = parser.add_subparsers(help='commands')
# all
all_parser = subparsers.add_parser('all', help...
How to get a list of installed android applications and pick one to run
...his earlier this week but I'm still not understanding how to get a list of all installed applications and then pick one to run.
...
Run a callback only if an attribute has changed in Rails
I have the following association in my app:
3 Answers
3
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Remove vertical padding from horizontal ProgressBar
... tried to avoid to add another dependency just to remove some padding. But all other solutions failed in one or the other way/version and in the end this was like 3 minutes to make it work!! Thank you.
– ToniTornado
Jan 10 '18 at 23:32
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How do I check if a string contains another string in Swift?
...
Apple's documentation says: An NSRange structure giving the location and length in the receiver of the first occurrence of aString. Returns {NSNotFound, 0} if aString is not found or is empty (@""). So maybe just checking for...
String, StringBuffer, and StringBuilder
...o, using String for logic operations is rather slow, and is not advised at all, since the JVM converts the String to a StringBuffer in the bytecode. A lot of overhead is wasted converting from String to StringBuffer and then back to String again.
– Pieter van Niekerk
...
How do I break a string over multiple lines?
...se "..." if you need to split lines in the middle of words or want to literally type linebreaks as \n:
key: "Antidisestab\
lishmentarianism.\n\nGet on it."
YAML is crazy.
Block scalar styles (>, |)
These allow characters such as \ and " without escaping, and add a new line (\n) to the end o...