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Difference between Destroy and Delete
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Basically destroy runs any callbacks on the model while delete doesn't.
From the Rails API:
ActiveRecord::Persistence.delete
Deletes the record in the database and freezes this instance to reflect that no changes should be ...
What does PermGen actually stand for?
...Briefly, it contains the Java objects associated with classes and interned strings. In Sun's client implementation with sharing on, classes.jsa is memory mapped to form the initial data, with about half read-only and half copy-on-write.
Java objects that are merely old are kept in the Tenured Gener...
How to round up a number to nearest 10?
...$input / 10) * 10;
Edit: I've been doing it this way for so long.. but TallGreenTree's answer is cleaner.
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grep a tab in UNIX
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Doesn't work if the String contains anything other than '\t'. How would you search for "\t " (tab + space) for example?
– Raman
Apr 17 '13 at 15:05
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Converting DateTime format using razor
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Try:
@item.Date.ToString("dd MMM yyyy")
or you could use the [DisplayFormat] attribute on your view model:
[DisplayFormat(DataFormatString = "{0:dd MMM yyyy}")]
public DateTime Date { get; set }
and in your view simply:
@Html.DisplayFor(...
How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
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Use an overload of rfind which has the pos parameter:
std::string s = "tititoto";
if (s.rfind("titi", 0) == 0) {
// s starts with prefix
}
Who needs anything else? Pure STL!
Many have misread this to mean "search backwards through the whole string looking for the prefix". That w...
Could not find stored procedure 'dbo.aspnet_CheckSchemaVersion'
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I have the same problem- i copy/paste connectionString from SQL Object manager in Visual Studio and forget to type Initial Catalog=YourDatabaseName.
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Which exception should I raise on bad/illegal argument combinations in Python?
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$ python -c 'print(sum())'
Traceback (most recent call last):
File "<string>", line 1, in <module>
TypeError: sum expected at least 1 arguments, got 0
Our junior dev just found this page in a google search for "python exception wrong arguments" and I'm surprised that the obvious (to...
What Android tools and methods work best to find memory/resource leaks? [closed]
...e for bitmaps.
Bitmaps on the previous activity layout are not properly deallocated by the garbage collector because they have crossed references to their activity. After many experiments I found a quite good solution for this problem.
First, set the “id” attribute on the parent view of your X...
Dependency injection with Jersey 2.0
...the REST resources (in your case, MyResource) using the packages() method call.
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