Implemented filling dynamics arrays with normal array data

examples/da_from_array.c

@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <stddef.h>
+#define LAZY_IMPL
+#include "../lazy.h"
+
+int main() {
+  float xs[] = {1, 2, 3, 4};
+  Lz_DA(float) nums = {0};
+  lz_da_fill_from_array(&nums, xs);
+
+  for (size_t i = 0; i < nums.cnt; ++i) {
+    printf("%f\n", nums.data[i]);
+  }
+  
+  return 0;
+}

lazy.h

@@ -130,6 +130,17 @@ long long lz_slc_atoll(Lz_Slc *src);
   for (T *name = (da).data; name-(da).data < (da).cnt; ++name)
 #endif
 
+#ifndef lz_da_fill_from_array
+#define lz_da_fill_from_array(p_da, arr) do {\
+  free((p_da)->data);\
+  size_t cnt = sizeof(arr)/sizeof(*arr);\
+  (p_da)->cap = cnt;\
+  (p_da)->cnt = cnt;\
+  (p_da)->data = malloc(sizeof(arr));\
+  memcpy((p_da)->data, arr, sizeof(arr));\
+} while(0)
+#endif
+
 #ifndef LZ_SB_DEFINITION
 #define LZ_SB_DEFINITION
 typedef Lz_DA(char) Lz_SB;