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Passing an enum value as command parameter from XAML
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Change text from “Submit” on input tag
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Redirect from asp.net web api post action
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Converting a list to a set changes element order
...sertion order, you can use the keys of a Python dictionary, which starting from Python 3.7 is guaranteed to preserve the insertion order:
>>> a = dict.fromkeys([1, 2, 20, 6, 210])
>>> b = dict.fromkeys([6, 20, 1])
>>> dict.fromkeys(x for x in a if x not in b)
{2: None, 21...
Parsing JSON Object in Java [duplicate]
...otation is represented by square brackets i.e []
3.) Retrieve JSONArray from JSONObject (created at 2nd step) using "interests" as index.
4.) Traverse JASONArray using loops upto the length of array provided by length() function
5.) Retrieve your JSONObjects from JSONArray using getJSONObject(...
Executing command line programs from within python [duplicate]
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The subprocess module is the preferred way of running other programs from Python -- much more flexible and nicer to use than os.system.
import subprocess
#subprocess.check_output(['ls', '-l']) # All that is technically needed...
print(subprocess.check_output(['ls', '-l']))
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Get connection string from App.config
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Since this is very common question I have prepared some screen shots from Visual Studio to make it easy to follow in 4 simple steps.
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NodeJS: How to decode base64 encoded string back to binary? [duplicate]
... and the following method should instead be used to construct a new buffer from a base64 encoded string:
var b64string = /* whatever */;
var buf = Buffer.from(b64string, 'base64'); // Ta-da
For Node.js v5.11.1 and below
Construct a new Buffer and pass 'base64' as the second argument:
var b64str...
Underscore vs Double underscore with variables and methods [duplicate]
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From PEP 8:
_single_leading_underscore: weak "internal use" indicator. E.g.
from M import *
does not import objects whose name starts with an underscore.
single_trailing_underscore_: used by convention to ...
Can enums be subclassed to add new elements?
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No, you can't do this in Java. Aside from anything else, d would then presumably be an instance of A (given the normal idea of "extends"), but users who only knew about A wouldn't know about it - which defeats the point of an enum being a well-known set of value...