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How to check if a string contains only digits in Java [duplicate]
...n java, the matches method (which was specified in the question) matches a complete string, not fragments. In other words, it is not necessary to use ^\\d+$ (even though it is also correct). Please see the last negative test case.
Please note that if you use an online "regex checker" then this may ...
BAT file: Open new cmd window and execute a command in there
I'm trying to open a new command window in a BAT file:
8 Answers
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How do you unit test a Celery task?
...hen working with celery tasks. The first one (as I'm suggesting bellow) is completely synchronous and should be the one that makes sure the algorithm does what it should do. The second session uses the whole system (including the broker) and makes sure I'm not having serialization issues or any othe...
Rails: How to change the title of a page?
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What's the difference between a file descriptor and file pointer?
... @nvl: fildes is surely available to Windows, e.g. msdn.microsoft.com/en-us/library/z0kc8e3z%28VS.80%29.aspx
– kennytm
Mar 11 '10 at 9:16
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How to change column datatype in SQL database without losing data
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You can easily do this using the following command. Any value of 0 will be turned into a 0 (BIT = false), anything else will be turned into 1 (BIT = true).
ALTER TABLE dbo.YourTable
ALTER COLUMN YourColumnName BIT
The other option would be to create a new column...
How to get the sizes of the tables of a MySQL database?
...ork for the InnoDB storage engine? According to mysql doc here - dev.mysql.com/doc/refman/5.7/en/show-table-status.html, the data_length field for that engine contains the size of the clustered index. That won't correctly represent the size of the data. Will it?
– euphoria83
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How to declare a variable in MySQL?
...sort_buffer_size;
They can be set at server startup using options on the command line or in an option file.
Most of them can be changed dynamically while the server is running using SET GLOBAL or SET SESSION:
-- Syntax to Set value to a Global variable:
SET GLOBAL sort_buffer_size=1000000;
SET @...