Questions tagged [casting]
Casting is a process where an object type is explicitly converted into another type if the conversion is allowed.
102 questions
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safe numeric type converter
I have written a function for casting between built in numeric types. I built it to check if the source value is within the range of the destination value, and to provide a nicely legible error if not....
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Absolute value meta programming
I am implementing a generic absolute value function that handles signed and unsigned integer values correctly over the input type's domain. The std::abs(...) ...
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Verified downcasting if RTTI is active
In an application that uses heavily polymorphic classes, I have often the need to downcast a pointer or a reference to the correct derived class. They should always be of the correct derived class, ...
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checked conversion function for C++20
Similar to C++ int_cast<> function for checked casts?, but C++20, and with target type deduced from context.
The goal is to implement a runtime check that the value being converted can be ...
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How to not clutter intended casts with static_cast<>? [closed]
have the following struct with one method:
...
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Method for create a copy of List<T>
I created a method to return a copy of List<T>, basically I convert the List<T> into an array ...
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Checking if two shapes collide in TypeScript (double dispatch)
Basically, I'm trying to create a generic way to check if two shapes are colliding.
I think this is kind of a "double-dispatch" problem, but I'm unsure if there is a better way to solve it ...
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588
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Safe runtime numeric casts
The rationale behind this code is to implement a runtime-safe number conversions in situations when precision loss is possible, but is not expected. Example: passing a ...
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ArrayDowncasters Implementation for Downcasting from System.Array to Array of Specific Type in C#
I am working with System.Array and I am trying to convert System.Array objects to array of specific type (such as ...
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Converting from `std::array<std::variant<>>` to `void*` [closed]
I'm doing some work with Vulkan, in this I need to pass a set of values of various types.
Currently I'm using std::array<std::variant<>> in my interface,...
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How to make Map<String, Object> expendible(?) safely in java
I am building some statistic counter in Java.
Each metric could have flexible depth so the implementation should able to explore the depth when value insert or update.
So I implement like below (with ...
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Returning interfaces in Java without significant casting
I am writing some code that takes and returns interfaces following the patterns in Effective Java Third Edition. I understand the principle - we want to take in interfaces because in many cases we don'...
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Parsing csv tokens as doubles and identifying which threw FormatException
Problem Statement
I'm reading each line from a .csv file and parsing each comma-delimited value and casting it to the appropriate type:
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Implementation of narrow_cast in C++
To summarize what I've been trying to do, I basically tried to make a safe narrow_cast operator, which casts to the Target type if and only if the value is ...
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