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AppInventor2中文网 + AI助手，用自然语言开发AppInventor应用 · App Inventor 2 中文网
...报错了社区发帖咨询。最终的问题是 AI 改错了其中一个 uuid 导致功能特性通信失败报错，修正 uuid 后功能正常。这里特别提醒一下，AI 生成有时也会出错，项目最好要先有备份，这个非常重要！另外，如果担心 AI 改乱了代码，...
Return rows in random order [duplicate]
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For MySQL use ORDER BY uuid(). (...for those arriving on this page via a generic search, like me!)
– Stan James
Jan 7 '12 at 4:15
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Get the Last Inserted Id Using Laravel Eloquent
... autoincrement, this will always return 0. In my case the id was a string (UUID) and for this to work I had to add public $incrementing = false; in my model.
– Luís Cruz
Apr 20 '15 at 17:18
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NodeJS: Saving a base64-encoded image to disk
...ase64 file, it return filename save it in DB.
import fs from 'fs';
const uuid = require('uuid/v1');
/*Download the base64 image in the server and returns the filename and path of image.*/
function saveImage(baseImage) {
/*path of the folder where your project is saved. (In my case i got it fr...
How do I import a specific version of a package using go get?
...n. Follow these steps:
go mod init .
go mod edit -require github.com/wilk/uuid@0.0.1`
go get -v -t ./...
go build
go install
Here's more info on that topic - https://github.com/golang/go/wiki/Modules
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ActiveRecord OR query
...ys as arguments, the following code works in Rails 4:
query = Order.where(uuid: uuids, id: ids)
Order.where(query.where_values.map(&:to_sql).join(" OR "))
#=> Order Load (0.7ms) SELECT "orders".* FROM "o
Difference between __str__ and __repr__?
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This is true because for obj = uuid.uuid1(), obj.__str__() is "2d7fc7f0-7706-11e9-94ae-0242ac110002" and obj.__repr__() is "UUID('2d7fc7f0-7706-11e9-94ae-0242ac110002')". Developers need (value + origin) whereas customers need a value and they don't care h...
Create a unique number with javascript time
...presentation, not sure though, but i can see the problem, if you call your uuid generator often enough, only last 3 chars are changing so the chances are high that you will get into a collision. You get much better odds if you just stick to new Date.getTime() calls. But hey if it worked for your pur...
Check if value exists in Postgres array
... value exists or not is as simple as using IN or NOT IN.
e.g.
id => uuid
exception_list_ids => uuid[]
select * from table where id NOT IN (select unnest(exception_list_ids) from table2)
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How can I remove specific rules from iptables?
...d temporary rule with some comment:
comment=$(cat /proc/sys/kernel/random/uuid | sed 's/\-//g')
iptables -A ..... -m comment --comment "${comment}" -j REQUIRED_ACTION
2. When the rule added and you wish to remove it (or everything with this comment), do:
iptables-save | grep -v "${comment}" | ip...