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加密签名使用指导 · App Inventor 2 中文网
...账号.Text, "&pwd=", 加密签名1.SHA256(join(密码输入框1.Text, "fun123-salt"))))
}
盐可以是任意一段固定文字，App 和服务器保持一致即可。MD5 已不适合单独用来保存密码，优先用 SHA256。
案例二：调用接口的参数签名
很...
Usage of sys.stdout.flush() method
...
123
Consider the following simple Python script:
import time
import sys
for i in range(5):
p...
Container-fluid vs .container
...h ranges.
@media screen and (max-width: 400px){
.container {
width: 123px;
}
}
@media screen and (min-width: 401px) and (max-width: 800px){
.container {
width: 456px;
}
}
@media screen and (min-width: 801px){
.container {
width: 789px;
}
}
Beyond
You can make any fixed w...
How to check for file lock? [duplicate]
...OLATION || errorCode == ERROR_LOCK_VIOLATION;
– taiji123
Jul 15 '19 at 14:40
...
PHP + MySQL transactions examples
...(mysql_error());
$query = "INSERT INTO employee (ssn,name,phone) values ('123-45-6789','Matt','1-800-555-1212')";
begin(); // transaction begins
$result = mysql_query($query);
if(!$result){
rollback(); // transaction rolls back
echo "transaction rolled back";
exit;
}else{
commit(...
Git flow release branches and tags - with or without “v” prefix
...
https://semver.org/#is-v123-a-semantic-version
Is “v1.2.3” a semantic version? No, “v1.2.3” is not a semantic
version. However, prefixing a semantic version with a “v” is a common
way (in English) to indicate it is a version numb...
What is P99 latency?
What does P99 latency represent? I keep hearing about this in discussions about an applications performance but couldn't find a resource online that would talk about this.
...
“Insert if not exists” statement in SQLite
...nstraint:
INSERT OR IGNORE INTO bookmarks(users_id, lessoninfo_id) VALUES(123, 456)
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App Inventor 2 ECharts 拓展：基于 ECharts 强大的个性化数据图表展示 · ...
...页
资源下载
.aix 拓展下载：
cn.fun123.ECharts.aix
demo程序下载：
echats_demo.aia
注：2个拓展是共一个.aix拓展文件，里面分2个拓展组件，导入.aix效果如下：
也可从拓展市场进行一键导入/升级：
ECharts.js ...