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What does the explicit keyword mean?
...rs callable with a single parameter to convert from one type to another in order to get the right type for a parameter.
Here's an example class with a constructor that can be used for implicit conversions:
class Foo
{
public:
// single parameter constructor, can be used as an implicit conversion
...
What is the difference between MOV and LEA?
...rray[i] only means "dereference" when there is no &.
An example is in order.
Consider the code
movq (%rdi, %rsi, 8), %rbp
This loads the value at the memory location %rdi + %rsi * 8 into the register %rbp. That is: get the value in the register %rdi and the value in the register %rsi. Multi...
Generate a random double in a range
...rtain conditions.
It is a good practice to first view the function doc in order to understand it
(https://docs.oracle.com/javase/8/docs/api/java/util/Random.html)
Now that we understand that the returned value of the function nextDouble() is a pseudorandom value between 0.0 and 1.0 we can use it ...
What is the preferred syntax for defining enums in JavaScript?
... some assumptions can no longer be made (that value represents the correct order for the size for example).
Remember, in JavaScript an object is just like a map or hash table. A set of name-value pairs. You can loop through them or otherwise manipulate them without knowing much about them in advan...
What are good examples of genetic algorithms/genetic programming solutions? [closed]
...nute-by-minute price data of the S&P500 futures, as well as a specific order (buy or sell) and stop-loss and stop-profit amounts. Each string (or "gene") had its profit performance evaluated by a run through 3 years of historical data; whenever the specified "shape" matched the historical data,...
Eclipse error: “The import XXX cannot be resolved”
...g I chose to change was: Project > Properties > Java Build Path > Order and Export > make a meaningless order change > Apply.
Changing the order back does not regress to the problem.
Simply touching the file might also resolve the issue (I'll test touch next time).
...
CMake link to external library
...uilds), don't do this.
This is a CMake bug, see http://cmake.org/Bug/view.php?id=14185 and http://gitlab.kitware.com/cmake/cmake/issues/14185
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DataContractSerializer doesn't call my constructor?
...But the XmlSerializer also needs public getter and setter on properties in order to serialize / deserialize.
I think of the DataContractSerializer / BinaryFormatter behavior like suspending the state of an instance during serialization and resuming during deserialization. In other words, the insta...
SQL join: selecting the last records in a one-to-many relationship
... customer c INNER JOIN
(SELECT RANK() OVER (PARTITION BY customer_id ORDER BY date DESC) r, *
FROM purchase) p
ON (c.id = p.customer_id)
WHERE p.r = 1
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EntityType has no key defined error
...that this post is late but
this solution helped me:
[Key]
[Column(Order = 0)]
public int RoleId { get; set; }
added [Column(Order = 0)]
after [Key]
can be added by increment by 1:
[Key]
[Column(Order = 1)]
public int RoleIdName { get; set; }
etc...
...