merge contract

src/utils/tool.js

@@ -105,3 +105,31 @@ export function sleep(time) {
     setTimeout(resolve, time)
   })
 }
+
+export function groupBy(datas, keys, callBack) {
+  const list = datas || []
+  const groups = []
+  const result = []
+  list.forEach(v => {
+    const key = {}
+    keys.forEach(k => {
+      key[k] = v[k]
+    })
+    let group = groups.find(v => {
+      return v._key === JSON.stringify(key)
+    })
+    if (!group) {
+      group = {
+        _key: JSON.stringify(key),
+        key: key
+      }
+      groups.push(group)
+    }
+    group.key.数量 = callBack(group.data, v)
+    group.data = callBack(group.data, v)
+  })
+  groups.map(v => {
+    result.push(v.key)
+  })
+  return result
+}