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How to drop columns using Rails migration
...or instance:
remove_column :users, :hobby
would remove the hobby Column from the users table.
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Reactjs convert html string to jsx
... worth playing it safe to sanitize the content using the sanitize function from the dompurify npm package if you're getting that information from an external API.
– Barry Michael Doyle
Jan 27 at 8:10
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How do I reference an existing branch from an issue in GitHub?
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Directly from GitHub:
References
Certain references are auto-linked:
SHA: be6a8cc1c1ecfe9489fb51e4869af15a13fc2cd2
User@SHA ref: mojombo@be6a8cc1c1ecfe9489fb51e4869af15a13fc2cd2
User/Project@SHA: mojombo/god@be6a8cc1c1ecfe9489fb51e4...
How can I split up a Git commit buried in history?
... @wilhelmtell: I omitted my usual "potentially dangerous; see 'recovering from upstream rebase'" boilerplate because the OP explicitly said he hadn't pushed this history.
– Cascabel
Nov 29 '10 at 21:52
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Logging in Scala
...Scala Logging, but the log messages are sent to an actor which calls SLF4J from a dedicated thread pool. Trades CPU time for (much better) latency. github.com/oncue/journal
– Gary Coady
Jul 24 '15 at 12:03
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How to perform better document version control on Excel files and SQL schema files
...p directories of XML files (See How to properly assemble a valid xlsx file from its internal sub-components?). Git will view them as binary unless decompressed. It is possible to unzip the .xlsx and track the changes to the individual XML files inside of the archive.
You could also do this with .xl...
What exactly are iterator, iterable, and iteration?
...ich defines a __getitem__ method that can take sequential indexes starting from zero (and raises an IndexError when the indexes are no longer valid). So an iterable is an object that you can get an iterator from.
An iterator is an object with a next (Python 2) or __next__ (Python 3) method.
Whene...
JavaScript equivalent to printf/String.Format
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From ES6 on you could use template strings:
let soMany = 10;
console.log(`This is ${soMany} times easier!`);
// "This is 10 times easier!
See Kim's answer below for details.
Otherwise:
Try sprintf() for JavaScript.
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TypeError: ObjectId('') is not JSON serializable
My response back from MongoDB after querying an aggregated function on document using Python, It returns valid response and i can print it but can not return it.
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Redirect stderr and stdout in Bash
... part of POSIX, but the bash man page makes no mention of it being removed from bash in the near future. The man page does specify a preference for '&>' over '>&', which is otherwise equivalent.
– chepner
Jul 16 '12 at 20:45
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