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Is there a way to make GHC provide the type class constraints of typed holes?
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This is now fixed in GHC 8.0 thanks to @DominiqueDevriese's GHC ticket.
Due to extended type defaulting, this isn't immediately obvious in GHCi. With your example,
> show _
<interactive>:7:6: error:
• Found hole: ...
Python: using a recursive algorithm as a generator
...ontrivial constraints. The problem came with a natural recursive solution. Now it happens that, even for relatively small input, the sequences are several thousands, thus I would prefer to use my algorithm as a generator instead of using it to fill a list with all the sequences.
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Schema for a multilanguage database
.... If you do that from the app this will probably not be a problem.
Let me know what you think - I am also about to make a decision on this for our next application.
So far we have used your 3rd type.
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Entity Framework: table without primary key
...xt it's used in, you can be assured uniqueness. Although thinking about it now, if a record is deleted that will effectively change the following records' "PK".
– Todd
Oct 11 '14 at 3:33
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Mapping a function on the values of a map in Clojure
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I agree. I didn't know the into function, but it makes perfect sense using it here.
– Thomas
Nov 5 '09 at 5:40
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How to copy files from 'assets' folder to sdcard?
...ension
Here is the code (I left the Log statements but you can drop them now):
final static String TARGET_BASE_PATH = "/sdcard/appname/voices/";
private void copyFilesToSdCard() {
copyFileOrDir(""); // copy all files in assets folder in my project
}
private void copyFileOrDir(String path) {...
How to Unit test with different settings in Django?
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I'd say this is the best way of doing this now in Django 1.4+
– Michael Mior
Jun 28 '13 at 12:59
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How do I put the image on the right side of the text in a UIButton?
...want a UIButton with a background image, text, and an image in it. Right now, when I do that, the image is on the left side of the text. The background image, text, and image all have different highlight states.
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Getting Http Status code number (200, 301, 404, etc.) from HttpWebRequest and HttpWebResponse
...n this manner poorly designed exceptions could be wrapped and ignored. But now a registry setting is required
– crokusek
Oct 11 '17 at 2:36
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Compare double to zero using epsilon
...32k, much closer to zero than the epsilon around one we calculated above!
Now this is a toy floating point model that does not reflect all the quirks of a real floating point system , but the ability to reflect values smaller than epsilon is reasonably similar with real floating point values.
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