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Python 3.x rounding behavior
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Python 3's way (called "round half to even" or "banker's rounding") is considered the standard rounding method these days, though some language implementations aren't on the bus yet.
The simple "always round 0.5 up" technique results in a slight bias toward th...
How to cast List to List
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you can always cast any object to any type by up-casting it to Object first. in your case:
(List<Customer>)(Object)list;
you must be sure that at runtime the list contains nothing but Customer objects.
Critics say that such casting indicates so...
Simple argparse example wanted: 1 argument, 3 results
...umentation for the argparse python module , while excellent I'm sure, is too much for my tiny beginner brain to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this, if B d...
Should I impose a maximum length on passwords?
...derstand that imposing a minimum length on passwords makes a lot of sense (to save users from themselves), but my bank has a requirement that passwords are between 6 and 8 characters long, and I started wondering...
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High Quality Image Scaling Library [closed]
I want to scale an image in C# with quality level as good as Photoshop does. Is there any C# image processing library available to do this thing?
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sed one-liner to convert all uppercase to lowercase?
I have a textfile in which some words are printed in ALL CAPS. I want to be able to just convert everything in the textfile to lowercase, using sed . That means that the first sentence would then read, 'i have a textfile in which some words are printed in all caps.'
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rake db:schema:load vs. migrations
...pp gets more complex and if we have the much cleaner rake db:schema:load to call instead, why do migrations exist at all?
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How to solve “Plugin execution not covered by lifecycle configuration” for Spring Data Maven Builds
I am trying to work with Spring Data and Neo4j . I started by trying to follow this guide linked to by the main site. In particular I based my pom.xml off of the "Hello, World!" example file . Here is a snip from my pom.xml for the plugin that is causing the issues...
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What happens to a declared, uninitialized variable in C? Does it have a value?
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Static variables (file scope and function static) are initialized to zero:
int x; // zero
int y = 0; // also zero
void foo() {
static int x; // also zero
}
Non-static variables (local variables) are indeterminate. Reading them prior to assigning a value results in undefined behavior.
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python: How do I know what type of exception occurred?
...l point out that you should not catch generic exceptions, but no one seems to want to tell you why, which is essential to understanding when you can break the "rule". Here is an explanation. Basically, it's so that you don't hide:
the fact that an error occurred
the specifics of the error that oc...