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how to get the host url using javascript from the current page
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hostname will give only domain and host will provide port also. This is great mini tool to see link anatomy bl.ocks.org/abernier/3070589
– Lukas Liesis
Apr 11 '16 at 5:00
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How to use ternary operator in razor (specifically on HTML attributes)?
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Here's a handy reference to Razor syntax: C# Razor Syntax Quick Reference
– Ryan Lundy
Jun 24 '11 at 15:24
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What does it mean to start a PHP function with an ampersand?
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An ampersand before a function name means the function will return a reference to a variable instead of the value.
Returning by reference is useful when
you want to use a function to find to
which variable a reference should b...
Can you use an alias in the WHERE clause in mysql?
...e performance implications since HAVING executes after the data is fetched and WHERE executes before.
– StockB
Feb 15 '17 at 19:16
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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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I needed an answer to this very question and started googling for the docs. Instead of the Postgres documentation, I ran into this topic at StackOverflow. So although it's a good think to reference the official docs, it's also very good to give the answer for future...
Trying to fire the onload event on script tag
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can you help me understand why the ordering is important?
– chovy
Apr 26 '13 at 8:19
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SQLite: How do I save the result of a query as a CSV file?
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From here and d5e5's comment:
You'll have to switch the output to csv-mode and switch to file output.
sqlite> .mode csv
sqlite> .output test.csv
sqlite> select * from tbl1;
sqlite> .output stdout
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In a javascript array, how do I get the last 5 elements, excluding the first element?
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+1 simple and useful. Additionally I think last value (1) must be 0 to work, This arr.slice(Math.max(arr.length - 5, 0)) worked for me.
– QMaster
Nov 1 '14 at 21:41
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How do I show an open file in eclipse Package Explorer?
...he Package Explorer view that looks like two yellow arrows pointed at left and right. The tooltip is "Link with Editor". Click that.
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Ruby on Rails: getting the max value from a DB column
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Assuming your model name is Bar and it has a column named bar, this should work:
Bar.maximum("bar")
See the excellent Rails Guides section on Calculations for more info.
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