大约有 46,000 项符合查询结果(耗时:0.0440秒) [XML]

https://stackoverflow.com/ques... 

Haskell: Lists, Arrays, Vectors, Sequences

... up performance tends to come from [Char] which the prelude has aliased as String. Char lists are convient, but tend to run on the order of 20 times slower than C strings, so feel free to use Data.Text or the very fast Data.ByteString. I'm sure there are other sequence oriented libraries I'm not t...
https://stackoverflow.com/ques... 

Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?

.... <uniqueKey>id</uniqueKey> <field name="solr_name" type="string" indexed="true" stored="true" /> Implementation Indexing This is where the real deal is. You need to do the indexing of data from MySQL to Solr inorder to make use of Solr Queries. Step 1: Go to Solr Admin ...
https://stackoverflow.com/ques... 

TypeScript “this” scoping issue when called in jquery callback

...ers to forget to handle this context Good: Typesafe in TypeScript Good: No extra work if the function has parameters Bad: Derived classes can't call base class methods written this way using super. Bad: The exact semantics of which methods are "pre-bound" and which aren't create an additional non-ty...
https://stackoverflow.com/ques... 

What does the Reflect object do in JavaScript?

...r property update. For instance: var name = ... // get property name as a string obj[name] // generic property lookup obj[name] = value // generic property update The Reflect.get and Reflect.set methods allow you to do the same thing, but additionally accept as a last optional argument a receiver...
https://stackoverflow.com/ques... 

Entity Framework 5 Updating a Record

...hen to call, for example: public void UpdatePasswordAndEmail(long userId, string password, string email) { var user = new User {UserId = userId, Password = password, Email = email}; Update(user, u => u.Password, u => u.Email); Save(); } I like one trip to the database. Its pro...
https://stackoverflow.com/ques... 

What are metaclasses in Python?

...ell, I guess it's a matter of consistency with str, the class that creates strings objects, and int the class that creates integer objects. type is just the class that creates class objects. You see that by checking the __class__ attribute. Everything, and I mean everything, is an object in Python. ...
https://stackoverflow.com/ques... 

How do I correctly clone a JavaScript object?

...*/ setTimeout(function(){ var d2 = clone(d1); alert("d1 = " + d1.toString() + "\nd2 = " + d2.toString()); }, 5000); The date string for d1 will be 5 seconds behind that of d2. A way to make one Date the same as another is by calling the setTime method, but that is specific to the Date clas...
https://stackoverflow.com/ques... 

Create table (structure) from existing table

... This solution is clearer than having the extra condition "1 = 2", I would recommend this – Pinte Dani Oct 2 '19 at 5:58 add a comment ...
https://stackoverflow.com/ques... 

Pass arguments to Constructor in VBA

...e our private properties to be set. Public Sub InitiateProperties(name as String, age as Integer) m_name = name m_age = age End Sub And now in the factory module: Public Function CreateEmployee(name as String, age as Integer) as Employee Dim employee_obj As Employee Set employ...
https://stackoverflow.com/ques... 

How to add local jar files to a Maven project?

...he project will just work as if the jars were in maven central without any extra manual steps. – opticyclic Jun 27 '16 at 23:34 9 ...