keyword

How do I use a C# reserved keyword as a property name without the @ prefix?

江枫思渺然 提交于 2019-11-28 07:39:27
问题 I need to design a class where one property name has to be return , but when I create a property name like return then I get an error. After some research I found out that one can use a reserved keyword as a property or variable name by adding a @ prefix in C#, or by enclosing it in square brackets [] in VB.NET. For example: var @class = new object(); So here is my class design code. public class Person { string _retVal; public string @return { get { return _retVal; } set { _retVal = value; }

Maximum characters in labels (table names, columns etc)

倖福魔咒の 提交于 2019-11-28 07:12:48
Hope this question wasn't asked before. Does anyone know the character limit for domain names? For example if I write this: CREATE DOMAIN d_complement_activite_etablissement AS character varying it will create a domain with the name: d_complement_activite_etabliss (Yeah, I know how to count, but I want some more info on the subject). Is there a command that can change this maximum length? Is this length the same for other names (columns, tables etc)? You ask: Is there a command that can change this maximum length? Is this length the same for other names (columns, tables etc)? The manual

Oauth with Twitter Streaming API in R (using RCurl)

烂漫一生 提交于 2019-11-28 07:06:09
I would like to connect to Twitter's Streaming API using RCurl in R, and also be able to filter keywords. However, new restrictions on authorization in Twitter API v1.1 is making using RCurl difficult. Before, code could go something like this taken from this page : getURL("https://stream.twitter.com/1/statuses/filter.json", userpwd="Username:Password", cainfo = "cacert.pem", write=my.function, postfields="track=bruins") But now, Twitter's new API is making users authorize with OAuth. I have a token and secret, I just need to place it in this code for authorization. Thanks! Simon O'Hanlon You

What is Keyword Density and how to create a script in PHP?

ぃ、小莉子 提交于 2019-11-28 06:38:48
I am working on a project where I have to find out the keyword density of thepage on the basis of URL of that page. I googled a lot but no help and scripts were found, I found a paid tool http://www.selfseo.com/store/_catalog/php_scripts/_keyword_density_checker_php_script But I am not aware actually what "keyword Density of a page" actually means? and also please tell me how can we create a PHP script which will fetch the keyword density of a web page. Thanks "Keyword density" is simply the frequency that the word occurs given as a percentage of the total number of words. The following PHP

Find keyword in text when keyword match certain conditions - C#

杀马特。学长 韩版系。学妹 提交于 2019-11-28 06:38:13
问题 I'm looking for a nice way to do the following: I have an article which has HTML tags in it like anchors and paragraphs and so on. I also have keyword which i need to find in the article and set it as anchor (I have some url to set there). If the keyword does exist in the article it should then match the following TWO conditions BEFORE making it an anchor: It can not be inside any tag. For example, something like <img alt="keyword"> will not be valid/matched. The keyword can't already be

Why does the “static” keyword have so many meanings in C and C++? [duplicate]

左心房为你撑大大i 提交于 2019-11-28 06:18:38
This question already has an answer here: What is the purpose of static keyword in array parameter of function like “char s[static 10]”? 1 answer As we know, the keyword static has multiple meanings in C. C99 added the possibility of legally writing void foo (int arr[static 50]) { // ... } which adds to the confusion, and C++ has static member variables and functions. This would not be so troublesome if all the uses could be connected in some way, but I find it hard to find that link for some of the cases. Particularly why the static keyword should be used to modify visibility (linkage), or

What is the “type” reserved word in TypeScript?

落爺英雄遲暮 提交于 2019-11-28 06:07:44
I just noticed when trying to create an interface in TypeScript that "type" is either a keyword or a reserved word. When creating the following interface, for example, "type" is shown in blue in Visual Studio 2013 with TypeScript 1.4: interface IExampleInterface { type: string; } Let's say that you then try to implement the interface in a class, like this: class ExampleClass implements IExampleInterface { public type: string; constructor() { this.type = "Example"; } } In the first line of the class, as you type (sorry) the word "type" in order to implement the property required by the

How to select bottom most rows?

萝らか妹 提交于 2019-11-28 05:09:40
I can do SELECT TOP (200) ... but why not BOTTOM (200)? Well not to get into philosophy what I mean is, how can I do the equivalent of TOP (200) but in reverse (from the bottom, like you'd expect BOTTOM to do...)? SELECT columns FROM ( SELECT TOP 200 columns FROM My_Table ORDER BY a_column DESC ) SQ ORDER BY a_column ASC It is unnecessary. You can use an ORDER BY and just change the sort to DESC to get the same effect. Martijn Burger Sorry, but I don't think I see any correct answers in my opinion. The TOP x function shows the records in undefined order. From that definition follows that a

Using SQL keyword in title of table or column

对着背影说爱祢 提交于 2019-11-28 04:43:53
问题 I want to name one of my tables as ORDER . Can I to use in SQL keywords as names? How bad is this practice? Whether to do so? And if such situation already exists then how do I use name of this table in queries? For example, I want: SELECT * FROM ORDER; or SELECT * FROM ORDER ORDER BY NAME; 回答1: wrap the tableName with backtick as ORDER is a reserved keyword. SELECT * FROM `ORDER` ORDER BY NAME; MySQL Reserved Keywords List In my own opinion, using reserved keywords are fine except that you

What really is the purpose of “base” keyword in c#?

◇◆丶佛笑我妖孽 提交于 2019-11-28 04:19:34
Thus for used base class for some commom reusable methods in every page of my application... public class BaseClass:System.Web.UI.Page { public string GetRandomPasswordUsingGUID(int length) { string guidResult = System.Guid.NewGuid().ToString(); guidResult = guidResult.Replace("-", string.Empty); return guidResult.Substring(0, length); } } So if i want to use this method i would just do, public partial class forms_age_group : BaseClass { protected void Page_Load(object sender, EventArgs e) { //i would just call it like this string pass = GetRandomPasswordUsingGUID(10); } } It does what i want