Update csview_api.md examples.

1 files changed, 37 insertions, 40 deletions

diff --git a/docs/csview_api.md b/docs/csview_api.md
index b23ec9c2..a3be3b96 100644
--- a/docs/csview_api.md
+++ b/docs/csview_api.md
@@ -118,35 +118,30 @@ using_cset_sv()
 ## Example
 ```c
 #include <stc/csview.h>
-#include <stc/cvec.h>
-#include <stc/cmap.h>
-
-// cmap<cstr, int> with csview as convertion type
-using_cmap_svkey(si, int);
 
-int main()
+int main ()
 {
-    csview text = c_lit("The length of this literal is evaluated at compile time and stored in csview text.");
-    printf("%s\nLength: %zu\n\n", text.str, text.size);
+    cstr str1 = cstr_lit("We think in generalities, but we live in details.");
+                                                    // (quoting Alfred N. Whitehead)
 
-    c_forvar (cmap_si map = csmap_si_init(), csmap_si_del(&map))
-    {
-        cmap_si_emplace(&map, c_lit("hello"), 100);
-        cmap_si_emplace(&map, c_lit("world"), 200);
-        cmap_si_emplace(&map, c_lit("hello"), 300); // already in map, ignored
+    csview sv1 = cstr_substr(str1, 3, 5);           // "think"
+    size_t pos = cstr_find(str1, "live");           // position of "live" in str1
+    csview sv2 = cstr_substr(str1, pos, 4);         // get "live"
+    csview sv3 = cstr_slice(str1, -8, -1);          // get "details"
+    printf("%.*s %.*s %.*s\n", csview_ARG(sv1), csview_ARG(sv2), csview_ARG(sv3));
 
-        // Efficient lookup: no string allocation or strlen() takes place:
-        cmap_si_value_t* v = cmap_si_get(&map, c_lit("world"));
-        printf("\n%s: %d\n", v->first.str, v->second);
-    }
+    cstr s1 = cstr_lit("Apples are red");
+    cstr s2 = cstr_from_v(cstr_substr(s1, -3, 3));  // "red"
+    cstr s3 = cstr_from_v(cstr_substr(s1, 0, 6));   // "Apples"
+    printf("%s %s\n", s2, s3.str);
+
+    c_del(cstr, &str1, &s1, &s2, &s3);
 }
 ```
 Output:
 ```
-A long and winded literal string
-Length: 32
-
-world: 200
+think live details
+red Apples
 ```
 
 ### Example 2: csview tokenizer (string split)
@@ -213,30 +208,32 @@ Output:
 ### Example 3
 ```c
 #include <stc/csview.h>
+#include <stc/cvec.h>
+#include <stc/cmap.h>
 
-int main ()
-{
-    cstr str1 = cstr_lit("We think in generalities, but we live in details.");
-                                                   // (quoting Alfred N. Whitehead)
-
-    csview sv1 = cstr_substr(str1, 3, 5);           // "think"
-    size_t pos = cstr_find(str1, "live");           // position of "live" in str
-    csview sv2 = cstr_substr(str1, pos, cstr_npos); // get from "live" to the end
+// cmap<cstr, int> with csview as convertion type
+using_cmap_svkey(si, int);
 
-    printf("%.*s %.*s\n", csview_ARG(sv1), csview_ARG(sv2));
+int main()
+{
+    csview text = c_lit("The length of this literal is evaluated at compile time and stored in csview text.");
+    csview suffix = csview_substr(text, -12, cstr_npos); // from pos -12 to end
+    printf("%.*s\n", csview_ARG(suffix));
 
-    cstr s1 = cstr_lit("Apples are red");
-    cstr s2 = cstr_from_v(cstr_substr(s1, 11, 3)); // "red"
-    printf("%s\n", s2.str);
-    cstr s3 = cstr_from_v(cstr_substr(s1, 0, 6)); // "Apples"
-    printf("%s\n", s3.str);
+    c_forvar (cmap_si map = cmap_si_init(), cmap_si_del(&map))
+    {
+        cmap_si_emplace(&map, c_lit("hello"), 100);
+        cmap_si_emplace(&map, c_lit("world"), 200);
+        cmap_si_emplace(&map, c_lit("hello"), 300); // already in map, ignored
 
-    c_del(cstr, &str1, &s1, &s2, &s3);
+        // Efficient lookup: no string allocation or strlen() takes place:
+        cmap_si_value_t* v = cmap_si_get(&map, c_lit("hello"));
+        printf("%s: %d\n", v->first.str, v->second);
+    }
 }
 ```
 Output:
 ```
-think live in details.        
-red
-Apples
-```
\ No newline at end of file
+csview text.
+hello: 100
+```