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Ruby on Rails - Import Data from a CSV file
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require 'csv'
csv_text = File.read('...')
csv = CSV.parse(csv_text, :headers => true)
csv.each do |row|
Moulding.create!(row.to_hash)
end
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Compress files while reading data from STDIN
Is it possible to compress (create a compressed archive) data while reading from stdin on Linux?
3 Answers
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Error Code: 2013. Lost connection to MySQL server during query
...or me it was under Edit → Preferences → SQL Editor → DBMS connection read time out (in seconds): 600
Changed the value to 6000.
Also unchecked limit rows as putting a limit in every time I want to search the whole data set gets tiresome.
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How to use support FileProvider for sharing content to other apps?
...ave to manually grant and revoke permissions(at runtime) for other apps to read specific Uri. Use Context.grantUriPermission and Context.revokeUriPermission methods.
For example:
//grant permision for app with package "packegeName", eg. before starting other app via intent
context.grantUriPermiss...
How to get number of rows using SqlDataReader in C#
...uestion is how to get the number of rows returned by a query using SqlDataReader in C#. I've seen some answers about this but none were clearly defined except for one that states to do a while loop with Read() method and increment a counter.
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Prevent nginx 504 Gateway timeout using PHP set_time_limit()
...e following line to the location block of the server in question:
fastcgi_read_timeout 180;
The entire location block looks like this:
location ~ \.php$ {
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_...
Java resource as file
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The issue was due to the read method deciding how much data to read (I wasn't aware of that). And it seems that the whole file is read if the file being read is located in a regular folder. If the file is within a jar because it has been packaged it ...
What is copy-on-write?
...data called A. Process 1, 2, 3, 4 each want to make a copy of it and start reading it, in a "Copy on write" system nothing is copied yet everything is still reading A. Now process 3 wants to make a change to it's copy of A, process 3 will now actually make a copy of A and create a new block of data ...
What to learn for making Java web applications in Java EE 6? [closed]
...llow the Java EE 6 tutorial. In my opinion, the book (that I've started to read so I know what I'm talking about) provides more guidance which might be preferable if "everything" is new for you (it covers both the Java EE platform and its APIs and the environment to build, deploy your applications)....
How do I get textual contents from BLOB in Oracle SQL
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You can use below SQL to read the BLOB Fields from table.
SELECT DBMS_LOB.SUBSTR(BLOB_FIELD_NAME) FROM TABLE_NAME;
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