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Converting from IEnumerable to List [duplicate]
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It is important to note that your solution works for the generic version of IEnumerable. The answer from user pickles below handles the non-generic version.
– mkmurray
Mar 20 '13 at 19:49
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ActiveModel::ForbiddenAttributesError when creating new user
I have this model in Ruby but it throws a ActiveModel::ForbiddenAttributesError
7 Answers
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How would I create a UIAlertView in Swift?
I have been working to create a UIAlertView in Swift, but for some reason I can't get the statement right because I'm getting this error:
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Managing constructors with many parameters in Java
... with static imports you never even have to "see" these "builders" at all. For example, you could have static methods name(String name) which returns a builder and Student(StudentBuilder) which returns a student. Hence Student(name("Joe").age(15).motto("I've wet myself"));
– ox...
What is the use of static constructors?
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No you can't overload it; a static constructor is useful for initializing any static fields associated with a type (or any other per-type operations) - useful in particular for reading required configuration data into readonly fields, etc.
It is run automatically by the runtime th...
How do you convert a byte array to a hexadecimal string, and vice versa?
...ing(byte[] ba)
{
StringBuilder hex = new StringBuilder(ba.Length * 2);
foreach (byte b in ba)
hex.AppendFormat("{0:x2}", b);
return hex.ToString();
}
or:
public static string ByteArrayToString(byte[] ba)
{
return BitConverter.ToString(ba).Replace("-","");
}
There are even more varia...
this.setState isn't merging states as I would expect
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For people that prefer using extend and that are also using babel you can do this.setState({ selected: { ...this.state.selected, name: 'barfoo' } }) which gets translated to this.setState({ selected: _extends({}, this.state.s...
Multiple Updates in MySQL
...t want that row to be inserted. what should id do? because i am fetching information from another site which maintains tables with id's. I am inserting values with respect to that id. if the site has new records then i will end up inserting only the ids and count except all other information. if and...
Why 0 is true but false is 1 in the shell?
... need to know. If it fails, however, you might need to know all kinds of information about the failure - why it happened, how to fix it, etc. Having zero mean 'success' and non-zero mean failure lets you can check pretty easily for success, and investigate the particular error for more details if y...
Parameterize an SQL IN clause
...rs.AddWithValue("@tags", string.Join("|", tags);
}
Two caveats:
The performance is terrible. LIKE "%...%" queries are not indexed.
Make sure you don't have any |, blank, or null tags or this won't work
There are other ways to accomplish this that some people may consider cleaner, so please kee...