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remove ugly cast

This commit is contained in:
Xie Yanbo 2020-07-20 18:44:28 +08:00
parent 11d80282c1
commit 1717743ce7
1 changed files with 4 additions and 4 deletions
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8
examples/simple_example.nim
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@ -32,18 +32,18 @@ proc main() =
var writeOptions = rocksdb_writeoptions_create() var writeOptions = rocksdb_writeoptions_create()
let key = "key" let key = "key"
let put_value = "value" let put_value = "value"
rocksdb_put(db, writeOptions, key.cstring, cast[csize_t](key.len), put_value.cstring, cast[csize_t](put_value.len), err.addr) rocksdb_put(db, writeOptions, key.cstring, key.len.csize_t, put_value.cstring, put_value.len.csize_t, err.addr)
doAssert err.isNil, $err doAssert err.isNil, $err
# Get value # Get value
var readOptions = rocksdb_readoptions_create() var readOptions = rocksdb_readoptions_create()
var len: csize_t var len: csize_t
let raw_value = rocksdb_get(db, readOptions, key, cast[csize_t](key.len), addr len, err.addr) # Important: rocksdb_get is not null-terminated let raw_value = rocksdb_get(db, readOptions, key, key.len.csize_t, addr len, err.addr) # Important: rocksdb_get is not null-terminated
doAssert err.isNil, $err doAssert err.isNil, $err
# Copy it to a regular Nim string (copyMem workaround because raw value is NOT null-terminated) # Copy it to a regular Nim string (copyMem workaround because raw value is NOT null-terminated)
var get_value = newString(cast[int](len)) var get_value = newString(len.int)
copyMem(addr get_value[0], unsafeAddr raw_value[0], cast[int](len) * sizeof(char)) copyMem(addr get_value[0], unsafeAddr raw_value[0], len.int * sizeof(char))
doAssert get_value == put_value doAssert get_value == put_value