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How to check postgres user and password? [closed]
... you may create a new user or set a new password to the existing user.
Usually, you can login as the postgres user:
Open a Terminal and do sudo su postgres.
Now, after entering your admin password, you are able to launch psql and do
CREATE USER yourname WITH SUPERUSER PASSWORD 'yourpassword';
T...
How to revert initial git commit?
...ng like this as this will completely wipe your entire repository including all other branches as well as the branch that you are trying to reset.
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What does immutable mean?
...our second alert it will show "foo" instead of oo.
Does it mean, when calling methods on
a string, it will return the modified
string, but it won't change the
initial string?
Yes. Nothing can change the string once it is created. Now this doesn't mean that you can't assign a new string...
What REALLY happens when you don't free after malloc?
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Just about every modern operating system will recover all the allocated memory space after a program exits. The only exception I can think of might be something like Palm OS where the program's static storage and runtime memory are pretty much the same thing, so not freeing mig...
Firing a double click event from a WPF ListView item using MVVM
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Please, code behind is not a bad thing at all. Unfortunately, quite a lot people in the WPF community got this wrong.
MVVM is not a pattern to eliminate the code behind. It is to separate the view part (appearance, animations, etc.) from the logic part (workflow). F...
REST API Login Pattern
...ture by Roy T. Fielding and Richard N. Taylor, i.e. sequence of works from all REST terminology came from, contains definition of client-server interaction:
All REST interactions are stateless. That is, each request contains
all of the information necessary for a connector to understand the
...
Why should I use 'li' instead of 'div'?
...xpress lists of things, and it helps the Google robot, screen readers, and all manner of users who don't care solely about the presentation of the site understand your content better.
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When should I use OWIN Katana?
I am new to OWIN and Katana. I really don't get why I should use OWIN, while I can use IIS . To simplify, my question is: What do I lose if I skip learning OWIN and use IIS for my websites?
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Difference between DTO, VO, POJO, JavaBeans?
...eans are reusable software components for Java that can be manipulated visually in a builder tool. Practically, they are classes written in the Java programming language conforming to a particular convention. They are used to encapsulate many objects into a single object (the bean), so that they can...
Postgresql - change the size of a varchar column to lower length
I have a question about the ALTER TABLE command on a really large table (almost 30 millions rows).
One of its columns is a varchar(255) and I would like to resize it to a varchar(40) .
Basically, I would like to change my column by running the following command:
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