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Difference between rake db:migrate db:reset and db:schema:load
... which I don't understand is how rake db:schema:load different from the former two.
5 Answers
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String concatenation: concat() vs “+” operator
...ll, then a.concat(b) throws a NullPointerException but a+=b will treat the original value of a as if it were null. Furthermore, the concat() method only accepts String values while the + operator will silently convert the argument to a String (using the toString() method for objects). So the concat(...
On showing dialog i get “Can not perform this action after onSaveInstanceState”
Some users are reporting, if they use the quick action in the notification bar, they are getting a force close.
16 Answers
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RVM is not working in ZSH
...I use RVM quite a bit too. The problem is that I can't seem to get RVM to work in ZSH, and it's working fine in the default Bash shell:
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Concatenate multiple files but include filename as section headers
...owever, I would like the filename of each file to precede the "data dump" for that file. Anyone know how to do this?
20 Ans...
Facebook Open Graph not clearing cache
...eems as though Facebook is caching old values of my meta tags. Old values for Attributes og:title and og:url are still used, even though I have changed them already.
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Difference between UTF-8 and UTF-16?
...here are a lot of good articles about this around the Web, but here is a short summary.
Both UTF-8 and UTF-16 are variable length encodings. However, in UTF-8 a character may occupy a minimum of 8 bits, while in UTF-16 character length starts with 16 bits.
Main UTF-8 pros:
Basic ASCII characters...
Javascript set img src
...something simple but it's quite annoying when everything you read doesn't work. I have images which may be duplicated many times over the course of a dynamically generated page. So the obvious thing to do is to preload it and use that one variable as the source all the time.
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Correct approach to global logging in Golang
What's the pattern for application logging in Go? If I've got, say, 5 goroutines I need to log from, should I...
7 Answers...
Difference between MEAN.js and MEAN.io
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They're essentially the same... They both use swig for templating, they both use karma and mocha for tests, passport integration, nodemon, etc.
Why so similar? Mean.js is a fork of Mean.io and both initiatives were started by the same guy... Mean.io is now under the umbrella...