let o1 = box SomeType()
let t = typeof<SomeType>
是否可以使用存储在其他对象( SomeType)中的类型信息(o1)将一个装箱对象(o1)降下来(到o1)?
最终目标是有一种功能的动态调用。我在地图中使用签名FSharpFunc<'Pre,'Post>存储函数:
// Lack of Covariance/Contravariance force me to define it as obj:
let functions = Map<string,obj>
let invoke f (pre
尝试删除奖金余额,以防用户不存在。O2O关系,其中bonusBalancesId位于users表上
DELETE "balances"
FROM "public"."bonus-balances" as "balances"
LEFT JOIN "public"."users" as "users"
ON "balances"."id"= "users"."bonusBalancesId"
WHERE "
我有一个单词列表:
string[] BAD_WORDS = { "xxx", "o2o" } // My list is actually a lot bigger about 100 words
我有一些文本(通常很短,最多250个单词),我需要删除其中的所有BAD_WORDS。
我已经尝试过了:
foreach (var word in BAD_WORDS)
{
string w = string.Format(" {0} ", word);
if (input.Contains(w))
我有个django项目运作得很好。
在这个项目中,我有以下模型:
class A:
b = models.ForeignKey(B)
c = models.ForeignKey(C)
d = models.ForeignKey(D)
last_update = models.DateTimeField()
class B:
# whatever
class C:
# whatever
class D:
# whatever
class E:
a = models.ForeignKey(A)
# And more mode