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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
I have been searching for resources on how to declare foreign key relationships and other constraints using code first EF 4.1 without much luck. Basically I am building the data model in code and using MVC3 to query that model. Everything works via MVC which is great (kudos to Microsoft!) but now I ...
serve current directory from command line
could someone give me a hint, howto serve the current directory from command line with ruby? it would be great, if i can have some system wide configuration (e.g. mime-types) and simply launch it from every directory.
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List all environment variables from the command line
...also do SET prefix to see all variables with names starting with prefix.
For example, if you want to read only derbydb from the environment variables, do the following:
set derby
...and you will get the following:
DERBY_HOME=c:\Users\amro-a\Desktop\db-derby-10.10.1.1-bin\db-derby-10.10.1.1-b...
Convert seconds value to hours minutes seconds?
...l variable) to a string in an editText like "1 hour 22 minutes 33 seconds" or something of the kind.
21 Answers
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decorators in the python standard lib (@deprecated specifically)
...mark routines as deprecated, but apparently there's no standard library decorator for deprecation. I am aware of recipes for it and the warnings module, but my question is: why is there no standard library decorator for this (common) task ?
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What's the difference between Application.ThreadException and AppDomain.CurrentDomain.UnhandledExcep
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Application.ThreadException is specific to Windows Forms. Winforms runs event handlers in response to messages sent to it by Windows. The Click event for example, I'm sure you know them. If such an event handler throws an exception then there's a back-stop inside the Winfor...
Split string on the first white space occurrence
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If you only care about the space character (and not tabs or other whitespace characters) and only care about everything before the first space and everything after the first space, you can do it without a regular expression like this:
str.substr(0,str.indexOf(' ')); // "72"
str.su...
Get element at specified position - JavaScript
...looking to write a function that takes two input parameters (the x and y coordinates) and returns the html element at the position on the screen represented by the parameters.
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TortoiseHg Apply a Patch
TortoiseHg allows you to email a patch file of your changes to someone, but does it support applying patches?
4 Answers
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The difference between try/catch/throw and try/catch(e)/throw e
...ave the Person, then .Save() will throw an exception. Should you use throw or throw e in this case? Well, it depends.
What I prefer is doing:
try {
/* ... */
person.Save();
}
catch(DBException e) {
throw new InvalidPersonException(
"The person has an invalid state and could not ...