Meaning of $? (dollar question mark) in shell scripts
Aug 1, 2019 · Meaning of $? (dollar question mark) in shell scripts Asked 14 years, 4 months ago Modified 8 months ago Viewed 339k times
What does a question mark mean in C# code? [duplicate]
49 Question marks have different meaning in C# depending on the context. The Null-Conditional Operator (MSDN, What does the question mark in member access mean in C#?)
What does the question mark character ('?') mean? - Stack Overflow
Feb 3, 2011 · What does the question mark character ('?') mean? Asked 14 years, 11 months ago Modified 3 years, 6 months ago Viewed 53k times
What does question mark and dot operator ?. mean in C# 6.0?
What does question mark and dot operator ?. mean in C# 6.0? Asked 10 years, 11 months ago Modified 4 years, 3 months ago Viewed 584k times
What does the question mark character ('?') mean in C++?
2 The question mark is the conditional operator. The code means that if f==r then 1 is returned, otherwise, return 0. The code could be rewritten as
regex - Question marks in regular expressions - Stack Overflow
Apr 7, 2011 · Some Other Uses of Question marks in regular expressions Apart from what's explained in other answers, there are still 3 more uses of Question Marks in regular expressions.
What is a Question Mark "?" and Colon - Stack Overflow
Apr 26, 2012 · Two questions about using a question mark "?" and colon ":" operator within the parentheses of a print function: What do they do? Also, does anyone know the standard term for …
c# - What is the purpose of a question mark after a value type (for ...
It means that the value type in question is a nullable type Nullable types are instances of the System.Nullable struct. A nullable type can represent the correct range of values for its underlying …
What is the meaning of ? (question mark) in a URL string?
60 Its name is query string. After the question mark you can pass key-value pairs and use them server-side.
What do two question marks together mean in C#?
Jan 15, 2009 · Ran across this line of code: FormsAuth = formsAuth ?? new FormsAuthenticationWrapper(); What do the two question marks mean, is it some kind of ternary …