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SHA-1 fingerprint of keystore certificate
Is the method for getting a SHA-1 fingerprint the same as the method of getting the a fingerprint? Previously, I was running this command:
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Rails: How does the respond_to block work?
...s a block, which is like a delegate. The block is from do until end, with |format| as an argument to the block.
respond_to executes your block, passing a Responder into the format argument.
http://api.rubyonrails.org/v4.1/classes/ActionController/Responder.html
The Responder does NOT contain a m...
What's the difference between Task.Start/Wait and Async/Await?
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@ronag No, it's not. How would you like it if waiting for a Task that takes 10 ms would actually execute a 10 hour-long Task on your thread, thus blocking you for the whole 10 hours?
– svick
Apr 20 '13 at 11:10
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unable to install pg gem
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I had this problem, this worked for me:
Install the postgresql-devel package, this will solve the issue of pg_config missing.
sudo apt-get install libpq-dev
share
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Mysql: Select rows from a table that are not in another
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hey this works for me too, thanks! but would that be a problem if the rows is > 300 like you mentioned above?
– thekucays
Jul 21 '16 at 4:21
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Add a CSS border on hover without moving the element [duplicate]
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@SungWonCho for box-sizing: border-box to work you would need to specify the width and the height of element, which I assume is not what you want. Use the technique described in the answer jsfiddle.net/g9qc2kg3
– me...
Random strings in Python
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Generating strings from (for example) lowercase characters:
import random, string
def randomword(length):
letters = string.ascii_lowercase
return ''.join(random.choice(letters) for i in range(length))
Results:
>>> randomword(10)
'...
how to check and set max_allowed_packet mysql variable [duplicate]
...s, "As of MySQL 5.0.84, the session value of this variable is read only. Before 5.0.84, setting the session value is permitted but has no effect." dev.mysql.com/doc/refman/5.0/en/…
– geofflee
Jan 31 '13 at 3:25
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Cannot push to Git repository on Bitbucket
...ted a new repository and I'm running into a strange error. I've used Git before on Bitbucket but I just reformatted and now I can't seem to get Git to work. After doing a commit, I had to add my email and name to the globals, but then it committed just fine.
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WebSockets protocol vs HTTP
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1) Why is the WebSockets protocol better?
WebSockets is better for situations that involve low-latency communication especially for low latency for client to server messages. For server to client data you can get fairly low latency using long-held connections and chunked transfer. Howeve...