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Negative weights using Dijkstra's Algorithm
...u have suggested will indeed find the shortest path in this graph, but not all graphs in general. For example, consider this graph:
Assume the edges are directed from left to right as in your example,
Your algorithm will work as follows:
First, you set d(A) to zero and the other distances to ...
Case Insensitive Flask-SQLAlchemy Query
...ties(models.User.username).\
filter(models.User.username.ilike("%ganye%")).all()
The above example is very useful in case one needs to use Flask's jsonify for AJAX purposes and then in your javascript access it using data.result:
from flask import jsonify
jsonify(result=user)
...
How to catch integer(0)?
...
If it's specifically zero length integers, then you want something like
is.integer0 <- function(x)
{
is.integer(x) && length(x) == 0L
}
Check it with:
is.integer0(integer(0)) #TRUE
is.integer0(0L) #FALSE
is.integer0(...
How do you handle multiple submit buttons in ASP.NET MVC Framework?
...e submit button issue based heavily on the post and comments from Maarten Balliauw.
[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class MultipleButtonAttribute : ActionNameSelectorAttribute
{
public string Name { get; set; }
public string Argument...
What is the meaning of the term “free function” in C++?
...hat free functions also don't take any arguments. But I am not sure. These all are my assumptions. So could anybody define free function?
...
What is the best way to paginate results in SQL Server
...E OrderDate >= '1980-01-01'
...which may seem inefficient, but is actually pretty performant, assuming all indexes etc. are properly set up.
Next, to get actual results back in a paged fashion, the following query would be most efficient:
SELECT *
FROM ( SELECT ROW_NUMBER() OVER ( ORDE...
How to write trycatch in R
...rn value in case of warning
return(NULL)
},
finally={
# NOTE:
# Here goes everything that should be executed at the end,
# regardless of success or error.
# If you want more than one expression to be executed, then you
# need to wr...
Difference between abstraction and encapsulation?
...s way of saying “I don't care about the type of data” (this is also called type erasure). The important point is that the implementation of qsort always stays the same, regardless of data type. The only thing that has to change is the compare function, which differs from data type to data type. ...
How to mount a host directory in a Docker container
...MAGE [COMMAND] [ARG...] Run a command in a new container -P, --publish-all=false: Publish all exposed ports to the host interfaces -a, --attach=[]: Attach to stdin, stdout or stderr. -c, --cpu-shares=0: CPU shares (relative weight)
– Kishore Vaishnav
Ma...
CSS: transition opacity on mouse-out?
...pacity of 1. Then removeClass when clicked on again.
I'm sure there's an all jQquery way to do this. I'm just not the guy to do it. :)
So in it's most basic form...
.slideDown().addClass("load");
.slideUp().removeClass("load");
Thanks for the help everyone.
...