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How to limit the maximum value of a numeric field in a Django model?
...ormer can be restricted to the number of decimal places stored and the overall number of characters stored, is there any way to restrict it to storing only numbers within a certain range, e.g. 0.0-5.0 ?
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How to generate the JPA entity Metamodel?
...etamodel Generator jar in the classpath and compiler level>=1.6 that is all you need build the project and metamodel will be generated automatically.
In case of IDE Eclipse
1. goto Project->Properties->Java Compiler->Annotation Processing and enable it.
2. Expand Annotation Processing...
Using NumberPicker Widget with Strings
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@ArulxZ If you haven't already figured this out, just call picker.setDescendantFocusability(ViewGroup.FOCUS_BLOCK_DESCENDANTS); to prevent the keyboard from popping up.
– Karim Varela
Jun 1 '15 at 20:21
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How do I enumerate through a JObject?
...hat (after this line: JObject priceComplianceJson = JObject.Parse(File.ReadAllText(fullPath));) I get, "Cannot convert type 'System.Collections.Generic.KeyValuePair<string,Newtonsoft.Json.Linq.JToken>' to 'Newtonsoft.Json.Linq.JProperty'" Removing the casting works, though: var key = x.Key; ...
how to pass an integer as ConverterParameter?
... @djacobson - True but that is what the ValueConversion attribute allows you to specify. Not exactly sure whether this is really used by at compile-time or run-time at all. In terms of the original posters question he specified that "i need it to be an integer. of course i can parse the str...
What does “Git push non-fast-forward updates were rejected” mean?
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GitHub has a nice section called "Dealing with “non-fast-forward” errors"
This error can be a bit overwhelming at first, do not fear.
Simply put, git cannot make the change on the remote without losing commits, so it refuses the push.
Usual...
“new” keyword in Scala
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Is it when we try to instantiate java objects only?
Not at all. There is two general cases when you ommit new in scala.
With singleton objects (that are oftenly used to store static functions and as a kind of factory similar to what you may seen in java):
scala> object LonelyGuy ...
How would I get a cron job to run every 30 minutes?
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I've always used */30 with success but I don't recall an application of mine where it was too critical if it only ran once an hour so I don't think I've ever checked.
– Adam Hawes
Feb 25 '09 at 5:39
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Why does C++11's lambda require “mutable” keyword for capture-by-value, by default?
...default, a function object should produce the same result every time it's called. This is the difference between an object orientated function and a function using a global variable, effectively.
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Is gettimeofday() guaranteed to be of microsecond resolution?
I am porting a game, that was originally written for the Win32 API, to Linux (well, porting the OS X port of the Win32 port to Linux).
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