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How to clear all the jobs from Sidekiq?
...ean" all data stored in redis, it is equivalent to a drop database or drop table in relational databases.
– jonathanccalixto
Jun 18 '17 at 18:49
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Prevent jQuery UI dialog from setting focus to first textbox
...s>
In the documentation, the focus logic is explained (just under the table of contents, under the title 'Focus'):
Upon opening a dialog, focus is automatically moved to the first item
that matches the following:
The first element within the dialog with the autofocus attribute
T...
Remove non-utf8 characters from string
... @Alliswell If I'm not mistaken <0x1a>, although not printable character, is a perfectly valid UTF-8 sequence. You might have issues with non-printable characters? Check this: stackoverflow.com/questions/1176904/…
– Frosty Z
Mar 12 '19 at 8:...
What is the difference between bool and Boolean types in C#
...an alias for System.Int32. See a full list of aliases here: Built-In Types Table (C# Reference).
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Aligning textviews on the left and right edges in Android layout
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For dynamic tables, you can do : TableRow.LayoutParams col1Params = new TableRow.LayoutParams(); // Wrap-up the content of the row col1Params.height = LayoutParams.WRAP_CONTENT; col1Params.width = LayoutParams.WRAP_CONTENT; //...
SQL Group By with an Order By
I have a table of tags and want to get the highest count tags from the list.
6 Answers
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Programmer Puzzle: Encoding a chess board state throughout a game
... we can determine all the legal moves from the current position in a predictable and deterministic way and state which we’ve chosen. This then goes back to the variable base encoding mentioned above. White and Black have 20 possible moves each on their first move, more on the second and so on.
Co...
grant remote access of MySQL database from any IP address
...SERNAME'@'1.2.3.4';
Its better to check information_schema.user_privileges table after running REVOKE command.
If you see USAGE privilege after running REVOKE command, its fine. It is as good as no privilege at all. I am not sure if it can be revoked.
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Hidden features of C
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Function pointers. You can use a table of function pointers to implement, e.g., fast indirect-threaded code interpreters (FORTH) or byte-code dispatchers, or to simulate OO-like virtual methods.
Then there are hidden gems in the standard library, such as qs...
Backwards migration with Django South
...ur_app, South runs all new migrations, in order. (It looks at the database tables to decide which ones are 'new').
However, you can also specify any migration by number, and South will migrate your database, either forward or backward, to take it to that point. So, with the example files above, if ...