osh.h

commit 8783f7c97b8365a5405f7373f155f854c7093f19
parent b65595de75ef12e42c09ed6a624630c93bfdc615
Author: Oshgnacknak <osh@oshgnacknak.de>
Date:   Sat, 18 Dec 2021 21:42:40 +0100

Introduce concept IsPrintable to type-save print1

Diffstat:
M
examples/print.cpp
 | 
1
+
M
osh.h
 | 
24
+++++++++++++-----------

2 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/examples/print.cpp b/examples/print.cpp
@@ -59,6 +59,7 @@ int main() {
 
     Vector2 v = { 69, 420 };
     osh::println("Printing costume types (see print1 above): ", v);
+    osh::println("^ Comment it out, error message is ACTUALLY readable");
 
     return 0; 
 }
diff --git a/osh.h b/osh.h
@@ -4,9 +4,11 @@
 namespace osh {
 
     template<typename T>
-    void print1(T& t);
+    concept IsPrintable = requires(T t) {
+        print1(t);
+    };
 
-    template<typename... Args>
+    template<IsPrintable... Args>
     void print(Args... args);
 
     template<typename... Args>
@@ -30,39 +32,39 @@ namespace osh {
     }
 
     template<typename T>
-    void print1(T* p) {
+    void print1(const T* p) {
         printf("%p", p);
     }
 
-    void print1(char& c) {
+    void print1(const char& c) {
         putchar(c);
     }
 
-    void print1(int& n) {
+    void print1(const int& n) {
         printf("%d", n);
     }
 
-    void print1(short int& n) {
+    void print1(const short int& n) {
         printf("%d", n);
     }
 
-    void print1(long int& n) {
+    void print1(const long int& n) {
         printf("%ld", n);
     }
 
-    void print1(long long int& n) {
+    void print1(const long long int& n) {
         printf("%lld", n);
     }
 
-    void print1(float& f) {
+    void print1(const float& f) {
         printf("%f", f);
     }
 
-    void print1(double& d) {
+    void print1(const double& d) {
         printf("%f", d);
     }
 
-    void print1(long double& d) {
+    void print1(const long double& d) {
         printf("%Lf", d);
     }