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PostgreSQL error: Fatal: role “username” does not exist
I'm setting up my PostgreSQL 9.1. I can't do anything with PostgreSQL: can't createdb , can't createuser ; all operations return the error message
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Unknown file type MIME?
...ers would not try to download the file if the "Content-Disposition" wasn't set, but there are too many web sites haphazardly downloading files without setting their filename to use. Especially banks.
– justdan23
May 15 '19 at 15:35
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What exactly does the post method do?
...en, the UI thread
dispatches the touch event to the widget which in turn sets its
pressed state and posts an invalidate request to the event queue. The
UI thread dequeues the request and notifies the widget to redraw
itself.
What happens if a user press a button which will do longOperation...
What is the difference between precision and scale?
...ision and scale in Oracle? In tutorials they usually leave scale empty and set precision to 6 when creating a primary key.
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Getting one value from a tuple
...fference between tuples and lists is that tuples are immutable - you can't set the elements of a tuple to different values, or add or remove elements like you can from a list. But other than that, in most situations, they work pretty much the same.
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C++, What does the colon after a constructor mean? [duplicate]
...at your comment about = is wrong. Using initialization list, value will be set according to initialisation list. Using assignment: class cl { public: cl() { cout<<"before setting is "<<va; va = 1; cout<<"after setting to 1 is...
Node.js and CPU intensive requests
... get yourself 95% of the way there.
The other way to structure this is to set up a job queue and send big compute tasks over the queue. Note that there is a lot of overhead associated with the IPC for a job queue, so this is only useful when the tasks are appreciably larger than the overhead.
I'm ...
Loading cross-domain endpoint with AJAX
... from google.com, you can use this snippet:
// It is good specify the charset you expect.
// You can use the charset you want instead of utf-8.
// See details for scriptCharset and contentType options:
// http://api.jquery.com/jQuery.ajax/#jQuery-ajax-settings
$.ajaxSetup({
scriptCharset: "utf...
What is the “right” way to iterate through an array in Ruby?
...y into another.
select is the iterator to use when you want to choose a subset.
inject is useful for generating sums or products, or collecting a single result.
It may seem like a lot to remember, but don't worry, you can get by without knowing all of them. But as you start to learn and use the ...
How to reset Django admin password?
...version 1.3) and have forgotten both admin username and password. How to reset both?
21 Answers
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