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In Mongoose, how do I sort by date? (node.js)
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You can also sort by the _id field. For example, to get the most recent record, you can do: await db.collection.findOne().sort({ _id: -1 });
– Mike K
Feb 8 at 11:00
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Virtual member call in a constructor
I'm getting a warning from ReSharper about a call to a virtual member from my objects constructor.
18 Answers
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Given two directory trees, how can I find out which files differ by content?
If I want find the differences between two directory trees, I usually just execute:
10 Answers
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Regex empty string or email
...hing an email address (that is, if you want wrong code that happens to (usually) work), use the regular-expressions.info link someone else submitted.
As for the empty string, ^$ is mentioned by multiple people and will work fine.
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How can I read a large text file line by line using Java?
...ce the Stream in a try-with-resource block to ensure the #close method is called on it, otherwise the underlying file handle is never closed until GC does it much later.
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is it possible to update UIButton title/text programmatically?
...to update the title/text of the UIButton to reflect the new state. I'm calling:
12 Answers
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What is the argument for printf that formats a long?
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Actually, you should change it to be %ld, to be more harmonic with OP question.
– DrBeco
Jun 21 '15 at 5:28
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How to close tag properly?
...es the tag properly. Best to add the alt attribute for people that are visually impaired.
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Rake just one migration
...n a single migration that changed and needed to be re-run independently of all other migrations. Fire up the console and do this:
>> require 'db/migrate/your_migrations.rb'
=> ["YourMigrations"]
>> YourMigrations.up
=> etc... as the migration runs
>> YourMigration.down
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Link to “pin it” on pinterest without generating a button
... or hundreds of posts, each one with social buttons.
I just can't generate all the buttons for each url: it is too slow (facebook, g+, twitter, pinterest... for hundreds of links). So, instead of the facebook share button to be generated on the fly, I use a simple img pointing to
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