Else clause on Python while statement
I’ve noticed the following code is legal in Python. My question is why? Is there a specific reason?
syntax
SyntaxError: Unexpected Identifier in Chrome’s Javascript console
The comma got eaten by the quotes! This part: Should be this: Aside: For pasting code into the console, you can paste them in one line at a time to help you pinpoint where things went wrong 😉
What is the Java ?: operator called and what does it do?
Yes, it is a shorthand form of It’s called the conditional operator. Many people (erroneously) call it the ternary operator, because it’s the only ternary (three-argument) operator in Java, C, C++, and probably many other languages. But theoretically there could be another ternary operator, whereas there can only be one conditional operator. The official name is given in the Java Language … Read more
What do << or >>> in java mean?
They are Bitwise Bit shift operators, they operate by shifting the number of bits being specified . Here is tutorial on how to use them. The signed left shift operator “<<” shifts a bit pattern to the left The signed right shift operator “>>” shifts a bit pattern to the right. The unsigned right shift operator “>>>” … Read more
What is the difference between syntax and semantics in programming languages?
TL; DR In summary, syntax is the concept that concerns itself only whether or not the sentence is valid for the grammar of the language. Semantics is about whether or not the sentence has a valid meaning. Long answer: Syntax is about the structure or the grammar of the language. It answers the question: how do I … Read more
What does the /= operator mean in Python?
It’s an assignment operator shorthand for / and =. Example: If you use help(‘/=’), you can get the full amount of symbols supported by this style of syntax (including but not limited to +=, -=, and *=), which I would strongly encourage.
Comments in Markdown
I believe that all the previously proposed solutions (apart from those that require specific implementations) result in the comments being included in the output HTML, even if they are not displayed. If you want a comment that is strictly for yourself (readers of the converted document should not be able to see it, even with … Read more
How do I pass multiple parameters into a function in PowerShell?
Parameters in calls to functions in PowerShell (all versions) are space-separated, not comma separated. Also, the parentheses are entirely unneccessary and will cause a parse error in PowerShell 2.0 (or later) if Set-StrictMode -Version 2 or higher is active. Parenthesised arguments are used in .NET methods only.
How can I do a line break (line continuation) in Python?
What is the line? You can just have arguments on the next line without any problems: Otherwise you can do something like this: or with explicit line break: Check the style guide for more information. Using parentheses, your example can be written over multiple lines: The same effect can be obtained using explicit line break: Note that … Read more
How to exit a loop in Python?
Replace exit with break. Exit isn’t a way to exit loops in Python. break statement docs