According to the standard (§6.4.4.4/10) The value of an integer character constant containing more than one character (e.g., ‘ab’), […] is implementation-defined. This is valid ISO 9899:2011 C. It compiles without warning under gcc with -Wall, and a “multi-character character constant” warning with -pedantic. From Wikipedia: Multi-character constants (e.g. ‘xy’) are valid, although rarely useful … Read more
As simple as that. Basically you don’t need it if the variable is int.
Just cast the enum, e.g. The above will work for the vast majority of enums you see in the wild, as the default underlying type for an enum is int. However, as cecilphillip points out, enums can have different underlying types. If an enum is declared as a uint, long, or ulong, it should be … Read more
Converting Int to String: And the other way around – converting String to Int: Or if you’re using Swift 2 or 3:
Downcasting is allowed when there is a possibility that it succeeds at run time: In some cases this will not succeed: When a cast (such as this last one) fails at runtime a ClassCastException will be thrown. In other cases it will work: Note that some casts will be disallowed at compile time, because they … Read more
A cast, as Blaz Bratanic suggested: is likely to silence the warning (though in principle a compiler can warn about anything it likes, even if there’s a cast). But it doesn’t solve the problem that the warning was telling you about, namely that a conversion from size_t to int really could overflow. If at all … Read more
My understanding of strongly typed was that the language wouldn’t make implicit type conversions. However, this code converts the char to it’s ascii value and then uses that value.
Integer division occurs, then the result, which is an integer, is assigned as a float. If the result is less than 1 then it ends up as 0. You’ll want to cast the expressions to floats first before dividing, e.g.
Which, not only is ugly and slow I’d dispute both. A regex or other string parsing method would be uglier and slower. I’m not sure that anything much could be faster than the above. It calls the function and returns. Try/Catch doesn’t introduce much overhead because the most common exception is caught without an extensive … Read more
An ORA-01722 error occurs when an attempt is made to convert a character string into a number, and the string cannot be converted into a number. Without seeing your table definition, it looks like you’re trying to convert the numeric sequence at the end of your values list to a number, and the spaces that … Read more