1BSON_COPY_TO_EXCLUDING_NOINIT(3)    libbson   BSON_COPY_TO_EXCLUDING_NOINIT(3)
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NAME

6       bson_copy_to_excluding_noinit - bson_copy_to_excluding_noinit()
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SYNOPSIS

9          void
10          bson_copy_to_excluding_noinit (const bson_t *src,
11                                         bson_t *dst,
12                                         const char *first_exclude,
13                                         ...) BSON_GNUC_NULL_TERMINATED;
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PARAMETERS

16       • src: A bson_t.
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18       • dst: A bson_t.
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20       • first_exclude: The first field name to exclude.
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DESCRIPTION

23       The bson_copy_to_excluding_noinit() function shall copy all fields from
24       src to dst except those specified by the variadic, NULL terminated list
25       of   keys   starting   from  first_exclude.   Works  the  same  way  as
26       bson_copy_to_excluding(), except does  not  call  bson_init()  on  dst.
27       This    function    should    be    preferred    in   new   code   over
28       bson_copy_to_excluding().
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30       WARNING:
31          This is generally not needed except in very special situations.
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EXAMPLE

34          #include <bson/bson.h>
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36          int main ()
37          {
38             bson_t bson;
39             bson_t bson2;
40             char *str;
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42             bson_init (&bson);
43             bson_append_int32 (&bson, "a", 1, 1);
44             bson_append_int32 (&bson, "b", 1, 2);
45             bson_append_int32 (&bson, "c", 1, 2);
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47             bson_init (&bson2);
48             bson_copy_to_excluding_noinit (&bson, &bson2, "b", NULL);
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50             str = bson_as_json (&bson2, NULL);
51             /* Prints
52              * { "a" : 1, "c" : 2 }
53              */
54             printf ("%s\n", str);
55             bson_free (str);
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57             bson_destroy (&bson);
58             bson_destroy (&bson2);
59          }
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AUTHOR

62       MongoDB, Inc
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65       2017-present, MongoDB, Inc
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701.23.1                           Oct 20, 2022 BSON_COPY_TO_EXCLUDING_NOINIT(3)
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