Title here
Summary here
Text Templates in D Programming Language
The D programming language offers built-in support for creating dynamic content or showing customized output to the user with the std.format module. This module provides similar functionality to Go’s text/template package.
import std.stdio;
import std.format;
import std.array;
void main()
{
// We can create a new format string and use it to format values.
// Format strings in D use `%s` as a placeholder for values.
string t1 = "Value is %s\n";
writef(t1, "some text");
writef(t1, 5);
writef(t1, ["D", "Rust", "C++", "C#"]);
// If the data is a struct we can use named format specifiers to access its fields.
// The fields should be accessible when formatting.
struct Person { string name; }
string t2 = "Name: %s\n";
writef(t2, Person("Jane Doe"));
// The same applies to associative arrays (D's equivalent of maps).
string[string] person = ["name": "Mickey Mouse"];
writef(t2, person["name"]);
// D doesn't have a direct equivalent to Go's template conditional execution,
// but we can achieve similar results using regular D code.
string t3(string value)
{
return value.length ? "yes\n" : "no\n";
}
write(t3("not empty"));
write(t3(""));
// For looping through arrays or other iterable types, we can use D's
// standard looping constructs along with the join function.
string[] languages = ["D", "Rust", "C++", "C#"];
writeln("Range: ", languages.join(" "));
}To run the program, save it as templates.d and use the D compiler (dmd) to compile and run:
$ dmd -run templates.d
Value is some text
Value is 5
Value is ["D", "Rust", "C++", "C#"]
Name: Jane Doe
Name: Mickey Mouse
yes
no
Range: D Rust C++ C#This D code demonstrates similar functionality to the Go example, using D’s standard library functions for formatting and output. While D doesn’t have a built-in templating system like Go’s text/template, it provides powerful string formatting capabilities that can be used to achieve similar results.