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How to remove a key from Hash and get the remaining hash in Ruby/Rails?
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To add to Fryie's answer, you don't even need to load all of ActiveSupport; you can just include them then require "active_support/core_ext/hash/except"
– GMA
May 13 '16 at 7:33
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Query to count the number of tables I have in MySQL
... Just a note about the use databasename; command. If the database is really big, the command can execute with a long wait time. In that case, login should be done with the option -A, ie: mysql -uroot -p -A, and the command will work fast.
– azurecorn
Jul 21...
Remove substring from the string
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@bcackerman -- delete wouldn't work, since it deletes all the characters you pass in: 'hello world'.delete('hello') #=> ' wrd'
– rusty
Jun 2 '15 at 14:55
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Alternate FizzBuzz Questions [closed]
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I've seen a small list of relatively simple programming problems used to weed out candidates, just like FizzBuzz. Here are some of the problems I've seen, in order of increasing difficulty:
Reverse a string
Reverse a sentence ("bob likes...
Private vs Protected - Visibility Good-Practice Concern [closed]
...thing as private as possible. This makes your class more encapsulated, and allows for changing the internals of the class without affecting the code using your class.
If you design your class to be inheritable, then carefully choose what may be overridden and accessible from subclasses, and make t...
When is JavaScript synchronous?
... synchronous and when it will be asynchronous? Does jQuery affect this at all?
7 Answers
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Mapping many-to-many association table with extra column(s)
...ou don't put any cascade on your relationships, then you must persist/save all the entities. Although only the owning side of the relationship (here, the UserService side) must be initialized, it's also a good practice to make sure both sides are in coherence.
User user = new User();
Service servi...
How to cherry-pick from a remote branch?
...ince "zebra" is a remote branch, I was thinking I don't have its data
locally.
You are correct that you don't have the right data, but tried to resolve it in the wrong way. To collect data locally from a remote source, you need to use git fetch. When you did git checkout zebra you switched to wh...
How do I convert from BLOB to TEXT in MySQL?
... great for those GROUP_CONCATs that convert your output to blobs and you really want them as strings. I had an issue similar to the OP's while using Node.JS with the node-mysql library - this fixed all group_concat issues.
– marksyzm
Jul 26 '13 at 13:53
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What Are Some Good .NET Profilers?
...te basic memory profiling.
dotTrace integrates with Resharper, which is really convenient, as you can profile the performance of a unit test with one click from the IDE. However, dotTrace often seems to give spurious results (e.g. saying that a method took several years to run)
I prefer the way th...