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When to use “ON UPDATE CASCADE”
...keys is a good & clean alternative to enums in my opinion (at least in MySQL DB flavors). For example, consider a table colors with rows blue, purple, yellow, and a table products with a product_color column, being FK'ed to the colors table. That restricts the choices like an enum, but unlike an...
How to add a progress bar to a shell script?
...u can do things, such as the following.
$ pmonitor -c gzip
/home/dds/data/mysql-2015-04-01.sql.gz 58.06%
An earlier version of Linux and FreeBSD shell scripts appears on my blog.
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What is the difference between build.sbt and build.scala?
...cala:
import sbt._
import Keys._
object Build extends Build {
lazy val root = Project(id = "root", base = file(".")).settings(
name := "hello",
version := "1.0"
)
}
The .sbt file can also include vals, lazy vals, and defs (but not objects and classes).
See the SBT document cal...
How can I change the copyright template in Xcode 4?
... company set up in your profile), let's change it.
Click on your project root in the Project Navigator on the left
Enable your Utilities view on the right while the project root is highlighted
Select the File Inspector, while the Identity displays your Project Name.
Under Project Document is a tex...
SQL join: selecting the last records in a one-to-many relationship
... features of your RDBMS to analyze the optimization plan. E.g. EXPLAIN on MySQL.
Some people use subqueries instead of the solution I show above, but I find my solution makes it easier to resolve ties.
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How to format a JavaScript date
...
Well, what I wanted was to convert today's date to a MySQL friendly date string like 2012-06-23, and to use that string as a parameter in one of my queries. The simple solution I've found is this:
var today = new Date().toISOString().slice(0, 10);
Keep in mind that the above...
What are the recommendations for html tag?
... trailing slash, other.html and dir/other.html would start at the DOCUMENT_ROOT with the given example, /other-subdirectory being (correctly) treated as file and thus omitted.
So for relative links, BASE works fine with the moved page – while anchors and ?queries would need the file name be spec...
NPM - How to fix “No readme data”
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Adding a README.md to your project root is the answer, but I've noticed that it takes a short while for NPM to pick up on this. Maybe a few minutes?
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Really weird eclipse keyboard behavior/bug?
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For me, the root cause was my mouse.
Backspace and navigation keys did not work. I could fix this temporarily by manually setting the key bindings as described on this page.
The root cause and permanent solution was fixing the stuck 3r...
Extract hostname name from string
I would like to match just the root of a URL and not the whole URL from a text string. Given:
27 Answers
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