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Codes / Error Code 010

Error Code 010

Overview

This error occurs when the compiler fails to instantiate a template due to incorrect arguments, constraints not being satisfied, or incompatible types.

Details

  • Common Causes:

    • Passing arguments that do not satisfy the template’s constraints.
    • Using types that are incompatible with the template definition.
    • Syntax errors or missing parameters in the template instantiation.

  • Example:

void main() {
    auto result = foo!int(42); // Error: template instantiation failure
}

void foo(T)(T value) if (is(T == string)) {
    writeln(value);
}
  • Solution:
    • Ensure the arguments satisfy the constraints of the template: 
      void foo(T)(T value) if (is(T == int)) {
    writeln(value);
}

void main() {
    auto result = foo!int(42); // Valid
}
    • Verify that the syntax and parameter types match the template definition: 
      void bar(T)(T[] values) {
    foreach (value; values) {
        writeln(value);
    }
}

void main() {
    bar!int([1, 2, 3]); // Valid
}