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how to log in to mysql and query the database from linux terminal
...top
sudo /etc/init.d/mysql restart
sudo /etc/init.d/mysql status
In some newer distros this might work as well if MySQL is set up as a deamon/service.
sudo service mysql start
sudo service mysql stop
sudo service mysql restart
sudo service mysql status
But the question is really impossible to a...
How do I measure time elapsed in Java? [duplicate]
...
Your new class:
public class TimeWatch {
long starts;
public static TimeWatch start() {
return new TimeWatch();
}
private TimeWatch() {
reset();
}
public TimeWatch reset() {
...
Python Infinity - Any caveats?
...verflowError: (34, 'Numerical result out of range')
The inf value is considered a very special value with unusual semantics, so it's better to know about an OverflowError straight away through an exception, rather than having an inf value silently injected into your calculations.
...
Can you connect to Amazon ElastiСache Redis outside of Amazon?
...lti-deployments just for a simple bug-fix maybe?)
Amazon have published a new guide that uses the EC2 as proxies for the outside world:
https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/accessing-elasticache.html#access-from-outside-aws
Good luck!
...
How do I modify fields inside the new PostgreSQL JSON datatype?
...jsonb_set(target jsonb,
path text[],
new_value jsonb,
create_missing boolean default true)
path can contain JSON array indexes too & negative integers that appear there count from the end of JSON arrays. However, a non-existing, but positive ...
What's the best way to put a c-struct in an NSArray?
...e?
you can call class_addIvar and add a Megapoint instance variable to a new class, or you can synthesize an objc variant of the Megapoint class at runtime (e.g., an instance variable for each field of Megapoint).
the former is equivalent to the compiled objc class:
@interface MONMegapoint { Meg...
JAX-RS — How to return JSON and HTTP status code together?
...ent that you return in the body.
A frequent use case is when you create a new entity (POST request) and want to return info about this new entity or maybe the entity itself, together with a 201 Created status code.
One approach is to use the response object just like described above and set the bo...
How to show what a commit did?
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f1157818%2fhow-to-show-what-a-commit-did%23new-answer', 'question_page');
}
);
...
Do you need to dispose of objects and set them to null?
...leaves the scope of the using statement.
using (MyIDisposableObject obj = new MyIDisposableObject())
{
// use the object here
} // the object is disposed here
Which is functionally equivalent to:
MyIDisposableObject obj;
try
{
obj = new MyIDisposableObject();
}
finally
{
if (obj != n...
Maven: The packaging for this project did not assign a file to the build artifact
...tion option set to false by default:
Require the jar plugin to build a new JAR even if none of the contents appear to have changed. By default, this plugin looks to see if the output jar exists and inputs have not changed. If these conditions are true, the plugin skips creation of the jar.
But...