大约有 30,000 项符合查询结果(耗时:0.0411秒) [XML]
What is the size of column of int(11) in mysql in bytes?
... stored value of 250000 will show 250000
The actual value stored in database is not affected, the size is still the same, and any calculation will behave normally.
This also applies to BIGINT, MEDIUMINT, SMALLINT, and TINYINT.
...
Javascript replace with reference to matched group?
... replacementValue can be a function and it is passed different arguments based on the catch groups? Amazing!
– daveloyall
Jun 13 '14 at 20:36
5
...
Difference between a theta join, equijoin and natural join
...ers to an arbitrary condition used as the criterion for the join. (see Database Systems: The Complete Book by Garcia-Molina, Ullman, Widom, chapter 2, Theta Join)
– Ram Rajamony
Feb 4 '17 at 21:14
...
Difference between len() and .__len__()?
...
Sadly, this another example of the lack of a common base class for objects in Python. Syntactic context switching has always been nutty. In some cases it is common idiom to use an underscore method, in others one should use something like a function to do something common to m...
Dictionary returning a default value if the key does not exist [duplicate]
...ctionaries when I need default values.
I wish this were just part of the base Dictionary class.
public class DictionaryWithDefault<TKey, TValue> : Dictionary<TKey, TValue>
{
TValue _default;
public TValue DefaultValue {
get { return _default; }
set { _default = value; }
...
Pickle or json?
... My point is: there is no real reason for using cPickle (or pickle) based on your premises over JSON. When I first read your answer I thought the reason might have been speed, but since this is not the case... :)
– mac
Oct 4 '12 at 17:54
...
Find the Smallest Integer Not in a List
...st in memory. In the form the question was asked, this would require O(N) 64-bit words.)
@Jorn comments that steps 1 through 3 are a variation on counting sort. In a sense he is right, but the differences are significant:
A counting sort requires an array of (at least) Xmax - Xmin counters wh...
What is the difference between a weak reference and an unowned reference?
...e: String) { self.name = name }
}
class CreditCard {
let number: UInt64
unowned let customer: Customer
init(number: UInt64, customer: Customer) { self.number = number; self.customer = customer }
}
In this example, a Customer may or may not have a CreditCard, but a CreditCard will alwa...
What happens to a declared, uninitialized variable in C? Does it have a value?
... klutt
19.6k1414 gold badges3737 silver badges6464 bronze badges
answered Oct 20 '09 at 21:27
bdonlanbdonlan
197k2626 gold b...
Comparing object properties in c# [closed]
...oblems with overriding .Equals() because i'm trying to implement this on a base class that gets inherited... because I don't know the keys for the class this'll be run against, i can't implement a decent override for GetHasCode() (req'd when you override Equals()).
– nailitdown...