ZADD RETCH option: Return number of elements added or updated
ZADD RETCH option: Return number of elements added or updated

Normally ZADD only returns the number of elements added to a sorted
set, using the RETCH option it returns the sum of elements added or
for which the score was updated.

himoca/redis,ksarch-saas/redis,ramonsnir/redis,slfs007/mk-redis,splitice/redis,ksarch-saas/redis,ramonsnir/redis,maodeyi/redis_lua,spearhead-ea/redis,spearhead-ea/redis,ksarch-saas/redis,splitice/redis,ksarch-saas/redis,splitice/redis,himoca/redis,himoca/redis,louisliangjun/redis,louisliangjun/redis,ttuna/msot-redis,MSOpenTech/redis,HunanTV/redis,ttuna/msot-redis,MSOpenTech/redis,HunanTV/redis,splitice/redis,MSOpenTech/redis,maodeyi/redis_lua,MSOpenTech/redis,louisliangjun/redis,ttuna/msot-redis,spearhead-ea/redis,ttuna/msot-redis,HunanTV/redis,louisliangjun/redis,slfs007/mk-redis,maodeyi/redis_lua,slfs007/mk-redis,HunanTV/redis,ramonsnir/redis,ttuna/msot-redis,MSOpenTech/redis