Recent questions tagged casting

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casting Arrays.asList causing exception: java.util.Arrays$ArrayList cannot be cast to java.util.ArrayList

I'm new to Java and am trying to understand why the first code snippet doesn't cause this exception but the ... JavaSE 1.6 in Eclipse Helios. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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casting - PHP unexpected result of float to int type cast

I'trying to convert a float to an int value in php: var_dump((int)(39.3 * 100.0)); //Returns 3929 but should be ... .3 * 100.0)); //Returns 3930 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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casting - C++ convert from 1 char to string?

I need to cast only 1 char to string. The opposite way is pretty simple like str[0]. The following did not work ... )c); //also doesn't work. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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656 views

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casting - How does the Java cast operator work?

I am trying to debug an issue involving a ClassCastException in Java. In the interest of solving the issue I need ... at the Java level and the JVM level? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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736 views

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casting - covariance in c#

Is it possible to cast a List<Subclass> to List<Superclass> in C# 4.0? Something along these lines: class joe ... the only alternative is to create a new List Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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906 views

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casting - Build a function object with properties in TypeScript

I want to create a function object, which also has some properties held on it. For example in JavaScript I would ... ; How would you build this without a cast? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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casting - Cast Int to enum in Java

What is the correct way to cast an Int to an enum in Java given the following enum? public enum MyEnum { EnumValue1, ... = (MyEnum) x; //Doesn't work??? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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658 views

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casting raw strings python

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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casting - C# "as" cast vs classic cast

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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798 views

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casting - How do I convert between numeric types safely and idiomatically?

Editor's note: This question is from a version of Rust prior to 1.0 and references some items that are not ... would fail if usize was less than 32 bits. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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900 views

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casting - Cast Double to Integer in Java

Any way to cast java.lang.Double to java.lang.Integer? It throws an exception "java.lang.ClassCastException ... lang.Double incompatible with java.lang.Integer" Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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829 views

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casting - How to cast a double to an int in Java by rounding it down?

I need to cast a double to an int in Java, but the numerical value must always round down. i.e. 99.99999999 -> 99 Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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925 views

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casting - How do you emulate nominal typing in TypeScript?

I have many functions in my project that take an number as parameter; half the time this number is an index into an ... ); getElement2([], 6); Any better ideas? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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850 views

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casting - Convert boolean to int in Java

What is the most accepted way to convert a boolean to an int in Java? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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825 views

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casting - Converting byte array to string in javascript

How do I convert a byte array into a string? I have found these functions that do the reverse: function ... the functions working the other way? Thanks. Shao Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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814 views

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casting - Can I assume (bool)true == (int)1 for any C++ compiler?

Can I assume (bool)true == (int)1 for any C++ compiler ? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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738 views

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casting - Why does Java implicitly (without cast) convert a `long` to a `float`?

Every time I think I understand about casting and conversions, I find another strange behavior. long l = 123456789L; ... . Why is a cast not required here? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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737 views

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casting - dynamic_cast and static_cast in C++

I am quite confused with the dynamic_cast keyword in C++. struct A { virtual void f() { } }; struct B : ... ++ in C so that I could better understand things? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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974 views

1 answer

casting - Convert Int to String in Swift

I'm trying to work out how to cast an Int into a String in Swift. I figure out a workaround, using ... as NSNumber let xString : String = xNSNumber.stringValue Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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756 views

1 answer

casting - How do I convert a string to a number in PHP?

I want to convert these types of values, '3', '2.34', '0.234343', etc. to a number. In JavaScript we can use Number( ... '2' 2 '2.34' 2.34 '0.3454545' 0.3454545 Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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755 views

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casting - Downcasting in Java

Upcasting is allowed in Java, however downcasting gives a compile error. The compile error can be removed by adding a cast ... { System.out.println("4"); } } Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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772 views

1 answer

casting - Implicit type conversion rules in C++ operators

I want to be better about knowing when I should cast. What are the implicit type conversion rules in C++ ... me if I have worded this question inaccurately. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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868 views

1 answer

casting void** to 2D array of int - C

i am trying to cast a void** pointer to an int** 2D array in C here is the code that i am trying to work ... me the warning that it is set but not used? thanks Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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691 views

1 answer

casting - Explanation of ClassCastException in Java

I read some articles written on "ClassCastException", but I couldn't get a good idea on what it means. What is a ClassCastException? Question&Answers:os...

asked Oct 16, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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casting - Typescript - Type 'undefined' is not assignable to type 'string | number | symbol'

I have a type export type status = 'success' | 'error' | undefined; Now, there is an object that maps ... /typescript-type-undefined-is-not-assignable-to-type-string-number-symbo...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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914 views

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casting - How can I convert an int64 into a byte array in go?

I have an id that is represented at an int64. How can I convert this to a []byte? I see that the binary package ... /35371385/how-can-i-convert-an-int64-into-a-byte-array-in-go...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

casting - How can I convert an int64 into a byte array in go?

I have an id that is represented at an int64. How can I convert this to a []byte? I see that the binary package ... /35371385/how-can-i-convert-an-int64-into-a-byte-array-in-go...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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casting - cast of Objective-C pointer type 'NSString *' to C pointer type 'CFStringRef' (aka 'const struct __CFString *') requires a bridged cast

When converting an Objective-C program to a Objective-C ARC, I get the error: "cast of Objective-C pointer ... -objective-c-pointer-type-nsstring-to-c-pointer-type-cfstringref-a...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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