private static Dictionary<Type, Func<string, object>> _parseActions
= new Dictionary<Type, Func<string, object>>
{
{ typeof(bool), value => {Convert.ToBoolean(value) ;}}
};
The above gives an error
Error 14 Not all code paths return a value in lambda expression of type 'System.Func<string,object>'
However this below is ok.
private static Dictionary<Type, Func<string, object>> _parseActions
= new Dictionary<Type, Func<string, object>>
{
{ typeof(bool), value => Convert.ToBoolean(value) }
};
I don't understand the difference between the two. I thought the extra braces in example1 are to allow us to use multiple lines in the anon function so why have they affected the meaning of the code?
The main difference between the == and === operator in javascript is that the == operator does the type conversion of the operands before comparison, whereas the === operator compares the values as well as the data types of the operands.
The equals() method of the Object class compare the equality of two objects. The two objects will be equal if they share the same memory address. Syntax: public boolean equals(Object obj)
identical() function in R Language is used to return TRUE when two objects are equal else return FALSE.
JavaScript === (Triple Equals) The triple equals sign in JavaScript means “equality without type coersion”. That means, the type and values must both be equal. Take for example the scenario where 0 is false. If we compare the same 0 and false with ===, we have false returned.
The equality operator (==) is used to compare two values or expressions. It is used to compare numbers, strings, Boolean values, variables, objects, arrays, or functions. The result is TRUE if the expressions are equal and FALSE otherwise.
The Equality Operator == For example, you can check whether two objects are equal (equality) by using a double equals sign == . We can see if the logical value of TRUE equals the logical value of TRUE by using this query TRUE == TRUE .
The first uses a code block, which will only return a value if you use the return
keyword:
value => { return Convert.ToBoolean(value); }
The second, being just an expression doesn't require an explicit return
.
The first one you are not returning anything and you must explicitly return a value since you have a wrapped it, where the second one you are implicitly returning a value.
To fix it do
private static Dictionary<Type, Func<string, object>> _parseActions = new Dictionary<Type, Func<string, object>>
{
{ typeof(bool), value => { return Convert.ToBoolean(value) ;}}
};
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