What is the difference between the | and || or operators?
Aug 29, 2008 · I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: |. What is the difference between those two usages? …
Logical operators ("and", "or") in Windows batch - Stack Overflow
Jan 26, 2010 · How would you implement logical operators in Windows batch files?
An "and" operator for an "if" statement in Bash - Stack Overflow
Quote: For a more elaborate explanation: [ and ] are not Bash reserved words. The if keyword introduces a condition to be evaluated by a process 1. The condition is true if the process's …
What is the difference between "++" and "+= 1 " operators?
Oct 20, 2012 · @leftaroundabout: Integers and iterators have nothing to do with one another. We aren't talking about pointers here (and the proper generalization of i += 1 would be …
What is Python's equivalent of && (logical-and) in an if-statement?
Mar 21, 2010 · There is no bitwise negation in Python (just the bitwise inverse operator ~ - but that is not equivalent to not). See also 6.6. Unary arithmetic and bitwise/binary operations and …
Regular Expressions: Is there an AND operator? - Stack Overflow
Obviously, you can use the | (pipe?) to represent OR, but is there a way to represent AND as well? Specifically, I'd like to match paragraphs of text that contain ALL of a certain phrase, but …
Difference between & and && in C? - Stack Overflow
The & operator performs a bit-wise and operation on its integer operands, producing an integer result. Thus (8 & 4) is (0b00001000 bitand 0b00000100) (using a binary notation that does not …
node.js - What's the difference between tilde (~) and caret (^) in ...
After I upgraded to the latest stable node and npm, I tried npm install moment --save. It saves the entry in the package.json with the caret ^ prefix. Previously, it was a tilde ~ prefix. Why are ...
ssl - Difference between pem, crt, key files - Stack Overflow
Jul 31, 2020 · I'm having problems understanding the difference between files produced by openssl and how to detect them. For example I'm trying to generate Self-signed cert with …
What are the differences between .pem, .cer, and .der?
Mar 30, 2014 · To use the public key contained in the certificate (and signed by the signature in the certificate) you should use any library that parses X.509 certificates and performs RSA …