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Naming returned columns in Pandas aggregate function? [duplicate]
...fined a priori instead of using lambda. Suitable function names also avoid calling .rename on the data frame afterwards. These functions can be passed with the same list syntax as above:
>>> def my_min(x):
>>> return x.min()
>>> def my_max(x):
>>> return...
How to get exit code when using Python subprocess communicate method?
...implemented: after setting up threads to read the child's streams, it just calls wait.
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Invoke a callback at the end of a transition
...
// d3 v5
d3.select("#myid").transition().style("opacity","0").on("end", myCallback);
// old way
d3.select("#myid").transition().style("opacity","0").each("end", myCallback);
This demo uses the "end" event to chain many transitions in order.
The donut example that ships with D3 also uses this to...
Can the jQuery UI Datepicker be made to disable Saturdays and Sundays (and holidays)?
...
There is the beforeShowDay option, which takes a function to be called for each date, returning true if the date is allowed or false if it is not. From the docs:
beforeShowDay
The function takes a date as a parameter and must return an array with [0] equal to true/false indicating w...
What is the meaning of CTOR?
...t are named CTOR or ctor. What's the meaning of ctor? Why is such a region called ctor?
4 Answers
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Do you have to put Task.Run in a method to make it async?
...nology: "asynchronous" (async) means that it may yield control back to the calling thread before it starts. In an async method, those "yield" points are await expressions.
This is very different than the term "asynchronous", as (mis)used by the MSDN documentation for years to mean "executes on a ba...
jQuery vs document.querySelectorAll
...k may have an easier time getting up to speed with something like jQuery.
Call it network effect if you like. This isn't to say that the code will be superior in jQuery; just that the concise nature of the code makes it easier to grasp the overall structure for programmers of all skill levels, if o...
How can I dynamically create derived classes from a base class
... the argnames variable is the one passed to the
# ClassFactory call
if key not in argnames:
raise TypeError("Argument %s not valid for %s"
% (key, self.__class__.__name__))
setattr(self, key, value)
BaseClass.__init__(s...
Difference between framework and static library in xcode4, and how to call them
...
basically, frameworks ARE libraries and provide a handy mechanism for working with them. If you look "inside" a framework, it's just a directory containing a static library and header files (in some folder structure with metadata...
SQL Server - stop or break execution of a SQL script
...o database connection.
If you are NOT logged in as admin, the RAISEERROR() call itself will fail and the script will continue executing.
When invoked with sqlcmd.exe, exit code 2745 will be reported.
Reference: http://www.mydatabasesupport.com/forums/ms-sqlserver/174037-sql-server-2000-abort-whole...