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Surrogate vs. natural/business keys [closed]
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Now, after reading a lot about surrogate keys and natural keys, I think using surrogate keys is better. But, on my database, natural keys (a NVARCHAR(20)) must be unique. I don't understand how I can get more speed if I need ...
How to save the output of a console.log(object) to a file?
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Update:
You can now just right click
Right click > Save as in the Console panel to save the logged messages to a file.
Original Answer:
You can use this devtools snippet shown below to create a console.save method. It creates a Fil...
Get property value from string using reflection
...null value of an existing property or no property at all? I'd much rather know immediately that I was sending in a bad property name. This is not production code, but a better improvement would be to throw a more specific exception (e.g. check for null on GetProperty and throw PropertyNotFoundExcept...
Best way to use multiple SSH private keys on one client
...File ~/.ssh/private_ssh_file
User username-on-remote-machine
Now you can connect using the friendly-name:
ssh friendly-name
More keywords can be found on the OpenSSH man page. NOTE: Some of the keywords listed might already be present in your /etc/ssh/ssh_config file.
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How is Python's List Implemented?
... list, an array? I searched around and only found people guessing. My C knowledge isn't good enough to look at the source code.
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Complex CSS selector for parent of active child [duplicate]
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The CSS Selectors 4 spec has now included the ability for selectors to ascend. stackoverflow.com/q/1014958/392
– Dan Herbert
Nov 22 '11 at 17:22
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How do I install pip on macOS or OS X?
...y have access to easy_install considering you are using macOS/OSX.
ℹ️ Now, all you have to do is run the following command.
sudo easy_install pip
After that, pip will be installed and you'll be able to use it for installing other packages.
Let me know if you have any problems installing pip...
Why use sprintf function in PHP?
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This. Now add numbered arguments and translations :]
– Konerak
Apr 23 '12 at 16:57
add a comment
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How can a web application send push notifications to iOS devices? [closed]
...ort push notifications.
UPDATE:
Mac OS X 10.9 & Safari 7 websites can now also send push notifications, but this still does not apply to iOS.
Read the Notification Programming Guide for Websites. Also check out WWDC 2013 Session 614.
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Express command not found
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FWIW official docs do mention it [now?] - expressjs.com/starter/generator.html
– Steven R. Loomis
Apr 30 '15 at 0:18
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