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advantage of tap method in ruby
...e!
they would have to follow all the three lines and then recognize that it is just creating an instance named user.
If it were:
user = User.new.tap do |u|
u.username = "foobar"
u.save!
end
then that would be immediately clear. A reader would not have to read what is inside the block to kn...
Calculating sum of repeated elements in AngularJS ng-repeat
...low displays a shop cart using ng-repeat . For each element in the array, it shows the item name, its amount and the subtotal ( product.price * product.quantity ).
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How to unmount a busy device
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YES!! There is a way to detach a busy device immediately (even if it is busy and cannot be unmounted forcefully). You may cleanup all later:
umount -l /PATH/OF/BUSY-DEVICE
umount -f /PATH/OF/BUSY-NFS (NETWORK-FILE-SYSTEM)
NOTE:
These commands can disrupt a running process, cause data loss...
Running single test from unittest.TestCase via command line
...t have to specify the class name as well:
python testMyCase.py MyCase.testItIsHot
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How to check with javascript if connection is local host?
....hostname === "localhost" || location.hostname === "127.0.0.1")
alert("It's a local server!");
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What should I name a table that maps two tables together? [closed]
...cience: cache invalidation
and naming things-- Phil Karlton
Coming up with a good name for a table that represents a many-to-many relationship makes the relationship easier to read and understand. Sometimes finding a great name is not trivial but usually it is worth to spend some time thinking a...
How can I run MongoDB as a Windows service?
How can I set up MongoDB so it can run as a Windows service?
29 Answers
29
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Why NSUserDefaults failed to save NSMutableDictionary in iOS?
...encode the root object (NSArray object) using NSKeyedArchiver, which ends with NSData. Then use UserDefaults save the NSData.
When I need the data, I read out the NSData, and use NSKeyedUnarchiver to convert NSData back to the object.
It is a little cumbersome, because i need to convert to/from ...
What is the at sign (@) in a batch file and what does it do?
One remotely familiar with windows/dos batch scripting will recognize this line:
2 Answers
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Convert from MySQL datetime to another format with PHP
...unction to turn that timestamp back into MySQL's standard date format.
(Editor Note: This answer is here because of an original question with confusing wording, and the general Google usefulness this answer provided even if it didnt' directly answer the question that now exists)
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