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How to make connection to Postgres via Node.js
... single user name from id:
db.one('SELECT name FROM users WHERE id = $1', [123])
.then(user => {
console.log(user.name); // print user name;
})
.catch(error => {
console.log(error); // print the error;
});
// alternative - new ES7 syntax with 'await':
// await ...
How can I send large messages with Kafka (over 15MB)?
...roperties. Now also bigger messages work :).
– Sonson123
Feb 3 '14 at 15:37
3
Are there any known...
How can I see the current value of my $PATH variable on OS X?
...
for MacOS, make sure you know where the GO install
export GOPATH=/usr/local/go
PATH=$PATH:$GOPATH/bin
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How do you build a Singleton in Dart?
...sible way:
void main() {
var s1 = Singleton.instance;
s1.somedata = 123;
var s2 = Singleton.instance;
print(s2.somedata); // 123
print(identical(s1, s2)); // true
print(s1 == s2); // true
//var s3 = new Singleton(); //produces a warning re missing default constructor and breaks on ...
Why does sys.exit() not exit when called inside a thread in Python?
...
from the thread?
Apart from the method Deestan described you can call os._exit (notice the underscore). Before using it make sure that you understand that it does no cleanups (like calling __del__ or similar).
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App Inventor 2 构建纯血鸿蒙 HarmonyOS App · App Inventor 2 中文网
...XT
填写应用名称和包名（Bundle ID/包名，格式建议：cn.fun123.你的项目名）
3.2 申请签名证书
HarmonyOS NEXT 有两类证书需要了解：
（1）调试证书（Debug证书）
用途：开发测试阶段使用
来源...
Flask-SQLAlchemy how to delete all rows in a single table
...e query.
ex.
#for specific value
db.session.query(Model).filter(Model.id==123).delete()
db.session.commit()
Delete Single Record by Object
record_obj = db.session.query(Model).filter(Model.id==123).first()
db.session.delete(record_obj)
db.session.commit()
https://flask-sqlalchemy.palletsprojec...
grepping using the “|” alternative operator
...overflow.com/a/6775943/3933332 doesn't have?
– Rizier123
Mar 1 '15 at 5:35
3
@Rizier123 -- look a...
How do malloc() and free() work?
...
OK some answers about malloc were already posted.
The more interesting part is how free works (and in this direction, malloc too can be understood better).
In many malloc/free implementations, free does normally not return the memory to the operating system (or at l...
How to call a stored procedure from Java and JPA
...prepareCall("{call getEmployeeDetails(?, ?)}");
cstmt.setInt("employeeId", 123);
cstmt.setInt("companyId", 456);
ResultSet rs = cstmt.executeQuery();
Reference
JDBC documentation: Java SE 6
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