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What is a segmentation fault?
...? Is it different in C and C++? How are segmentation faults and dangling pointers related?
14 Answers
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in entity framework code first, how to use KeyAttribute on multiple columns
...r instance:
public class MyEntity
{
[Key, Column(Order=0)]
public int MyFirstKeyProperty { get; set; }
[Key, Column(Order=1)]
public int MySecondKeyProperty { get; set; }
[Key, Column(Order=2)]
public string MyThirdKeyProperty { get; set; }
// other properties
}
If ...
Using IQueryable with Linq
...ery complete, but I thought I'd add something about this from the user's point of view, as well...
The main difference, from a user's perspective, is that, when you use IQueryable<T> (with a provider that supports things correctly), you can save a lot of resources.
For example, if you're w...
How to capitalize the first letter of word in a string using Java?
...ing newSentence = "";
for (String word : words) {
for (int i = 0; i < word.length(); i++)
newSentence = newSentence + ((i == 0) ? word.substring(i, i + 1).toUpperCase():
(i != word.length() - 1) ? word.substring(i, i + 1).toLowerCase() : wo...
How can I represent an infinite number in Python?
...
test > 10000
test > x
Will always be true. Unless of course, as pointed out, x is also infinity or "nan" ("not a number").
Additionally (Python 2.x ONLY), in a comparison to Ellipsis, float(inf) is lesser, e.g:
float('inf') < Ellipsis
would return true.
...
Error: “Cannot modify the return value” c#
...
This is because Point is a value type (struct).
Because of this, when you access the Origin property you're accessing a copy of the value held by the class, not the value itself as you would with a reference type (class), so if you set the X ...
How to create the most compact mapping n → isprime(n) up to a limit N?
...u should know that the math behind the fastest algorithms is not for the faint of heart.
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Where to place AutoMapper.CreateMaps?
...
AutoMapperDomainConfiguration.Configure();
// etc
It's kind of like an "interface of words" - can't enforce it, but you expect it, so you can code (and refactor) if necessary.
EDIT:
Just thought I'd mention that I now use AutoMapper profiles, so the above example becomes:
public static class A...
MySQL: Can't create table (errno: 150)
...
From the MySQL - FOREIGN KEY Constraints Documentation:
If you re-create a table that was dropped, it must have a definition that conforms to the foreign key constraints referencing it. It must have the correct column names and types, and it must have index...
Truncate (not round) decimal places in SQL Server
...eric_expression is to be rounded. length must be an expression of type tinyint, smallint, or int. When length is a positive number, numeric_expression is rounded to the number of decimal positions specified by length. When length is a negative number, numeric_expression is rounded on the left side o...