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Why use double indirection? or Why use pointers to pointers?

... No (!) need to cast the result of malloc in C. – alk Apr 16 '19 at 16:50 add a comment  |  ...
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Why 0 is true but false is 1 in the shell?

...l always look the same. Also it needs to be expected that some people cast errno to char or short at some point, or even to float. (int)((char)ENOLCK) is not ENOLCK when char is not at least 8-bit long (7-bit ASCII char machines are supported by UNIX), while (int)((char)0) is 0 independent of t...
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How do you load custom UITableViewCells from Xib files?

...l(withIdentifier: "cell", for: indexPath) as? MyCellClass { // Cell be casted properly cell.myCustomProperty = true } else { // Wrong type? Wrong identifier? } And of course, the type of the associated class of the cell is the one you defined in the .xib file for the UITableViewCell su...
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Type of conditional expression cannot be determined because there is no implicit conversion between

...lable database field type, for example a nullable DateTime and you try and cast data to DateTime, when it infact required (DateTime?) – Mike Upjohn Sep 16 '15 at 14:58 ...
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Why does this C++ snippet compile (non-void function does not return a value) [duplicate]

...long enough to hold any of the possible types and the caller might need to cast it or extract it from a union. So the deepest cause is probably the C language creators' belief that procedures that do not return any value are just an unimportant special case of functions that do; this problem got ag...
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Is there a performance impact when calling ToList()?

...nce), and the methods that start with As do not and will just require some cast or simple operation. Additional details on List<T> Here is a little more detail on how List<T> works in case you're interested :) A List<T> also uses a construct called a dynamic array which needs to...
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What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java

...or vice versa. This answer stackoverflow.com/questions/2334200/… and its cast to AnyRef just reminded me that this was still mysterious to me. – huynhjl Feb 26 '10 at 14:30 ...
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Get the IP address of the machine

...ing ioctl's! However, your handling of IP6 is still incorrect - you should cast to sockaddr_in6, i.e. something like tmpAddrPtr=&((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; – Andrey Oct 14 '11 at 10:04 ...
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Any equivalent to .= for adding to beginning of string in PHP?

...ltiple languages. sprintf has its place and purpose on when to use it. eg. casting of multiple values or enforcing a number of inputs using sprintf, provides you with more functionality than simple concatenation when is required. See: 3v4l.org/8PWil But it should be not be used as a complete replace...
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Passing two command parameters using a WPF binding

... Use Tuple in Converter, and in OnExecute, cast the parameter object back to Tuple. public class YourConverter : IMultiValueConverter { public object Convert(object[] values, ...) { Tuple<string, string> tuple = new Tuple<strin...