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7 cze 2011 · Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center . – Community Bot
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 value type, plus an additional null value.
24 paź 2011 · Negative lookaheads are used if you want to match something not followed by something else. The negative lookahead construct is the pair of parentheses, with the opening parenthesis followed by a question mark and an exclamation point. x(?!x2) example. Consider a word There; Now, by default, the RegEx e will find the third letter e in word ...
26 kwi 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 them or where I can find more information on their use? I've read that they are similar to an 'if' 'else' statement.
do you know if Python supports some keyword or expression like in C++ to return values based on if condition, all in the same line (The C++ if expressed with the question mark ?) // C++ value = ( ...
Question marks are found in prepared statements, meaning it is parametrized and can be called again and again without having to reconstruct the whole sql statement, just by changing the parameters. Some frameworks use those that together with SqlCommands.
16 wrz 2010 · While going through some SQL books I found that examples tend to use question marks (?) in their queries. What does it represent?
Nullable Value Types (MSDN, What is the purpose of a question mark after a type (for example: int? myVariable)? int? universalAnswer = 42; Nullable Reference Types C# 8 added nullable reference types with many more options to sprinkle question marks (it also gave new place to put explanation marks - null!"
3 lut 2011 · Most likely the '?' is the ternary operator. Its grammar is: RESULT = (COND) ? (STATEMEN IF TRUE) : (STATEMENT IF FALSE)
12 wrz 2021 · The question mark is the conditional operator. The code means that if f==r then 1 is returned, ...
