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Best way to structure a tkinter application? [closed]
...expand=True)
root.mainloop()
The important things to notice are:
I don't use a wildcard import. I import the package as "tk", which requires that I prefix all commands with tk.. This prevents global namespace pollution, plus it makes the code completely obvious when you are using Tkinter cla...
What is the python “with” statement designed for?
... os.chdir(current_dir)
with working_directory("data/stuff"):
# do something within data/stuff
# here I am back again in the original working directory
Here's another example that temporarily redirects sys.stdin, sys.stdout and sys.stderr to some other file handle and restores them late...
Redirecting to previous page after authentication in node.js using passport.js
... itself works quite nice, also sessions are stored nicely with redis but I do have some troubles with redirecting the user to where he started from before being prompted to authenticate.
...
Check for changes to an SQL Server table?
...teger as a checksum, how often is that going to collide? In my case, I was doing that with about 10 tables, all with hundreds of records. I had at least one collision per day. Check this other answer stackoverflow.com/questions/14450415/…
– LPains
Jul 27 '18 ...
How do I get an empty array of any size in python?
...ssign to elements, it is not a problem either. (I mention it because I've done exactly that far too often :) )
– dappawit
Mar 5 '11 at 17:52
4
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How do I create a datetime in Python from milliseconds?
...reate a similar Date object in Java by java.util.Date(milliseconds) . How do I create the comparable in Python?
5 Answers
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What does a lazy val do?
I noticed that Scala provide lazy vals . But I don't get what they do.
7 Answers
7
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Simplest SOAP example
... alert(xmlhttp.responseText);
// alert('done. use firebug/console to see network response');
}
}
}
// Send the POST request
xmlhttp.setRequestHeader('Content-Type', 'text/xml');
xml...
performSelector may cause a leak because its selector is unknown
...on the right hand side simply tells the compiler that you know what you're doing and not to generate a warning since the pointer types don't match).
Finally, you call the function pointer2.
Complex Example
When the selector takes arguments or returns a value, you'll have to change things a bit:
...
How do you use script variables in psql?
... have both a quoted and unquoted variable of the same string! And you can do something like this ....
INSERT INTO :myvariable.table1 SELECT * FROM table2 WHERE column1 = :quoted_myvariable;
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