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How to import a Python class that is in a directory above?
... exists. Two dots means up one package level. Three dots is up two levels, etc. So if you execute from . import mod from a module in the pkg package then you will end up importing pkg.mod. If you execute from ..subpkg2 import mod from within pkg.subpkg1 you will import pkg.subpkg2.mod. The specifica...
Using Enum values as String literals
...he values in use including duplication, non valid variable name characters etc. Just don't forget to also override valueOf().
– indivisible
Apr 6 '17 at 15:21
...
Running a cron every 30 seconds
...ice.
Here is a simple example that logs "Hello World" every 10 seconds:
/etc/systemd/system/helloworld.service:
[Unit]
Description=Say Hello
[Service]
ExecStart=/usr/bin/logger -i Hello World
/etc/systemd/system/helloworld.timer:
[Unit]
Description=Say Hello every 10 seconds
[Timer]
OnBootSec=...
Difference between FetchType LAZY and EAGER in Java Persistence API?
...versity entity might have some basic properties such as id, name, address, etc. as well as a collection property called students that returns the list of students for a given university:
public class University {
private String id;
private String name;
private String address;
private ...
Manual deployment vs. Amazon Elastic Beanstalk
...over maually creating EC2 instance and setting up tomcat server and deploy etc for a typical java web applicaion. Are load balancing, Monitoring and autoscaling the only advantages?
...
View list of all JavaScript variables in Google Chrome Console
... object (all the functions and variables, e.g., $ and jQuery on this page, etc.). Though, this is quite a list; not sure how helpful it is...
Otherwise just do window and start going down its tree:
window
This will give you DOMWindow, an expandable/explorable object.
...
How do you create a static class in C++?
... static void myMethod() ;
} ;
// source
void MyClass::myMethod()
{
// etc.
}
But you must remember that "static classes" are hacks in the Java-like kind of languages (e.g. C#) that are unable to have non-member functions, so they have instead to move them inside classes as static methods.
In...
Efficiency of premature return in a function
...ying to optimize. For the major C-like languages (C, objC, C++, Java, C#, etc) and their usual compilers, will these two functions run just as efficiently? Is there any difference in the compiled code?
...
How to cast an Object to an int
...t;
Scenario 2: any numerical object
In Java Integer, Long, BigInteger etc. all implement the Number interface which has a method named intValue. Any other custom types with a numerical aspect should also implement Number (for example: Age implements Number). So you can:
int x = ((Number)yourOb...
How can I make git accept a self signed certificate?
...it config:
http.sslVerify
Whether to verify the SSL certificate when fetching or pushing over HTTPS.
Can be overridden by the GIT_SSL_NO_VERIFY environment variable.
http.sslCAInfo
File containing the certificates to verify the peer with when fetching or pushing
over HTTPS. Can be ...