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Build vs new in Rails 3
...ng a new Client object from the clients collection, and so it can automatically set the firm_id to some_firm.id, whereas the docs are calling Client.new which has no knowledge of any Firm's id at all, so it needs the firm_id passed to it.
The only difference between some_firm.clients.new and some_f...
What are free monads?
...r monad, and the second one gives you a way to "get out" of it.
More generally, if X is a Y with some extra stuff P, then a "free X" is a a way of getting from a Y to an X without gaining anything extra.
Examples: a monoid (X) is a set (Y) with extra structure (P) that basically says it has an ope...
Base64 length calculation?
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I explained all this in the answer above: (i) each output char represents 6 bits of input, (ii) 4 output chars therefore represent 4 * 6 = 24 bits, (iii) 24 bits is 3 bytes, (iv) 3 bytes of input therefore result in 4 chars of output, (...
Android Studio Project Structure (v.s. Eclipse Project Structure)
I'm trying to learn android development and I am initially confused by the different project structures between Eclipse and Android Studio. This makes it difficult to follow tutorials designed for Eclipse. Could anyone let me know why these differences exist? Should they exist?
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How to make a in Bootstrap look like a normal link in nav-tabs?
...around them which messes up the layout. BUT you can fix that by adding a small amount of CSS (see @mcNux answer below)
– Martin CR
Feb 22 at 17:21
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Mixing Angular and ASP.NET MVC/Web api?
...ular/REST(WebApi) gives a richer and smoother result. It's much faster and allows you to build websites that come quite close to desktop applications, without any funky hacks.
Angular does have a little learning curve, but once your team has mastered it, you'll build much better websites in less t...
How do I view an older version of an SVN file?
...lyMunky Try svn cat | vim -. If vim's syntax highlighting doesn't automatically kick in, do :set syntax=java (or whichever language).
– John Kugelman
Nov 27 '12 at 4:10
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Secure hash and salt for PHP passwords
It is currently said that MD5 is partially unsafe. Taking this into consideration, I'd like to know which mechanism to use for password protection.
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Rails: create on has_one association
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First of all, here is how to do what you want:
@user = current_user
@shop = Shop.create(params[:shop])
@user.shop = @shop
Now here's why your version did not work:
You probably thought that this might work because if User had a ha...
How to change the decimal separator of DecimalFormat from comma to dot/point?
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Side note: NumberFormat.getNumberInstance() can run unusually slowly on some Android 7 devices. An alternative is String.format() which runs quickly. See stackoverflow.com/questions/2379221/java-currency-number-format
– Mr-IDE
Oct 16 '17 at 5:...