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Non-static variable cannot be referenced from a static context
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You must understand the difference between a class and an instance of that class. If you see a car on the street, you know immediately that it's a car even if you can't see which model or type. This is because you compare what you see with the class "car". The...
MySQL: Large VARCHAR vs. TEXT?
I've got a messages table in MySQL which records messages between users. Apart from the typical ids and message types (all integer types) I need to save the actual message text as either VARCHAR or TEXT. I'm setting a front-end limit of 3000 characters which means the messages would never be inserte...
Javascript Functions and default parameters, not working in IE and Chrome
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You can't do this, but you can instead do something like:
function saveItem(andClose) {
if(andClose === undefined) {
andClose = false;
}
}
This is often shortened to something like:
function setName(name) {
name = name || 'Bob...
How do I retrieve the number of columns in a Pandas data frame?
How do you programmatically retrieve the number of columns in a pandas dataframe? I was hoping for something like:
6 Answer...
Get started with Latex on Linux [closed]
Impressed by is-latex-worth-learning-today , and many how-to's on Windows,
8 Answers
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Nested classes' scope?
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class Outer(object):
outer_var = 1
class Inner(object):
@property
def inner_var(self):
return Outer.outer_var
This isn't quite the same as similar things work in other languages, and uses global look...
Is Disney's FastPass Valid and/or Useful Queue Theory
...it longer than an hour, or you can get a FastPass which allows you to come back during a specified time block (usually a couple hours later) and only wait for 10 minutes or less. You can only be "waiting" for one ride at a time with a FastPass.
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Find the min/max element of an Array in JavaScript
How can I easily obtain the min or max element of a JavaScript Array?
51 Answers
51
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How do I set the path to a DLL file in Visual Studio?
I developed an application that depends on a DLL file. When I debug my application, the applicationwould complain that:
6...
Displaying the build date
I currently have an app displaying the build number in its title window. That's well and good except it means nothing to most of the users, who want to know if they have the latest build - they tend to refer to it as "last Thursday's" rather than build 1.0.8.4321.
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