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How do I explicitly specify a Model's table-name mapping in Rails?
...ntries < ActiveRecord::Base
self.table_name = "cc"
end
In Rails 3.x this is the way to specify the table name.
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What does upstream mean in nginx?
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It's used for proxying requests to other servers.
An example from http://wiki.nginx.org/LoadBalanceExample is:
http {
upstream myproject {
server 127.0.0.1:8000 weight=3;
server 127.0.0.1:8001;
server 127.0.0.1:8002;
s...
receiving error: 'Error: SSL Error: SELF_SIGNED_CERT_IN_CHAIN' while using npm
...ull" instead, ignoring ssl errors is a bad idea
– alex
Jan 4 '14 at 0:50
6
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Where do I use delegates? [closed]
...a function pointer and it defines what that function looks like.
A great example for a real world application of a delegate is the Predicate. In the example from the link, you will notice that Array.Find takes the array to search and then a predicate to handle the criteria of what to find. In thi...
What's the purpose of SQL keyword “AS”?
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There is no difference between both statements above. AS is just a more explicit way of mentioning the alias
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Peak memory usage of a linux/unix process
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Here's a one-liner that doesn't require any external scripts or utilities and doesn't require you to start the process via another program like Valgrind or time, so you can use it for any process that's already running:
grep VmPeak /proc/$PID/status
(replace $PID wit...
Get value from NSTextField
I have an NSTextField and I need to get the field's value into a variable. What's the appropriate method?
4 Answers
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Handler vs AsyncTask
...kground operations in my project. At some point I started reaching that max jobs limit, so my tasks would only start after another finished. In the end I had to change all my structure to stop using asynctasks and avoid reaching that limitation.
– tbraun
Feb ...
Encoding an image file with base64
...e doing something along the lines of:
import base64
with open("yourfile.ext", "rb") as image_file:
encoded_string = base64.b64encode(image_file.read())
You have to open the file first of course, and read its contents - you cannot simply pass the path to the encode function.
Edit:
Ok, here i...
Bash variable scope
Please explain to me why the very last echo statement is blank? I expect that XCODE is incremented in the while loop to a value of 1:
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