if-statement Archives - Page 2 of 6

Programming, Python

IT Nursery

I want to check my environment for the existence of a variable, say "FOO", in Python. For this purpose, I am using the ...

linux, Programming

IT Nursery

I’m new to bash and I’m stuck at trying to negate the following command: wget -q --tries=10 --timeout=20 --spider http://google.com if [...

Programming, r

IT Nursery

Can the mutate be used when the mutation is conditional (depending on the values of certain column values)? This example helps showing what ...

C++, Programming

IT Nursery

I’ve been thinking of some beginner mistakes and I ended up with the one on the if statement. I expanded a bit the ...

bash, Programming

IT Nursery

I’ve seen Bash scripts test for a non-zero length string in two different ways. Most scripts use the -n option: #!/bin/bash # With ...

Programming, Python

IT Nursery

I have a method that calls 4 other methods in sequence to check for specific conditions, and returns immediately (not checking the following ...

I have a string that I load throughout my application, and it changes from numbers to letters and such. I have a simple ...

I was reading Java’s ArrayList source code and noticed some comparisons in if-statements. In Java 7, the method grow(int) uses if (newCapacity - ...

So far whenever I needed to use a conditional statement within a Widget I have done the following (Using Center and Containers as ...

I couldn’t find any one simple straightforward resource spelling out the meaning of and fix for the following BASH shell error, so I’m ...