How should I convert a string to an enum in C#?

How should I convert a string to an enum in C#?

What's the best way to convert a string to an enumeration value in C#?I have an HTML select tag containing the values of an enumeration. When the page is posted, I want to pick up the value (which will be in the form of a string) and conver

Simplest code for array intersection in javascript

Simplest code for array intersection in javascript

What's the simplest, library-free code for implementing array intersections in javascript? I want to writeintersection([1,2,3], [2,3,4,5])and get[2, 3] 1:Use a combination of Array.prototype.filter and Array.prototype.indexOf.array1.filt

Reference: mod_rewrite, URL rewriting and “pretty links” explained

Reference: mod_rewrite, URL rewriting and “pretty links” explained

"Pretty links" is an often requested topic, but it is rarely fully explained. mod_rewrite is one way to make "pretty links", but it's complex and its syntax is very terse, hard to grok and the documentation assumes a certain level of profic

How to save data with Python?

How to save data with Python?

I am working on a program in Python and want users to be able to save data they are working on. I have looked into cPickle; it seems like it would be a fast and easy way to save data, it seems insecure. Since entire functions, classes, et

~= operator in Swift

~= operator in Swift

I recently downloaded the Advanced NSOperations sample app from Apple and found this code...// Operators to use in the switch statement.private func ~=(lhs: (String, Int, String?), rhs: (String, Int, String?)) -> Bool { return lhs.0 ~= r

When would JavaScript == make more sense than ===?

When would JavaScript == make more sense than ===?

As Which equals operator (== vs ===) should be used in JavaScript comparisons? indicates they are basically identical except '===' also ensures type equality and hence '==' might perform type conversion. In Douglas Crockford's JavaScript: T

Why does PHP have a $ sign in front of variables? [closed]

Why does PHP have a $ sign in front of variables? [closed]

In PHP and some other scripting languages have the $var syntax while Java and other languages we can do just var. Is there any theory behind it? Does it help them to parse. If not why would they choose to tack on an extra character in front

Is qDebug() thread-safe?

Is qDebug() thread-safe?

Is qDebug() thread-safe? By thread-safe I don't just mean not-crashing, but also if I call qDebug() from different threads, is it possible for the output to become mixed-up? I tested it with this code, and it doesn't appear to be so, howeve

Data type conversion in MongoDB

Data type conversion in MongoDB

I have a collection called Document in MongoDB. Documents in this collection have a field called CreationDate stored in ISO date type. My task is to count the number of documents created per day and sort by the number asynchronously. The ou

Change a string of integers separated by spaces to a list of int

Change a string of integers separated by spaces to a list of int

How do i make something likex = '1 2 3 45 87 65 6 8'>>> foo(x)[1,2,3,45,87,65,6,8]I'm completely stuck, if i do it by index, then the numbers with more than 1 digit will be broken down. Help please. 1:You can use a list comprehension in

Meaning of Three dot (…) in PHP

Meaning of Three dot (…) in PHP

What is the meaning of Three dot (...) in PHP ?While I am installing Magento 2 in my Sever I got an error. Investigate the code and found that there is a Three dot (...), which is producing the error. I mentioned the code belowreturn new $t

Convert strings to UPPERCASE in SQL Server

Convert strings to UPPERCASE in SQL Server

What is the T-SQL function for converting strings into upper case in SQL Server? 1:UPPERSELECT UPPER(LastName) + ', ' + FirstName AS NameFROM Person.Person 2:Query: select UPPER('Hello world!!!')Result: HELLO WORLD!!!

Sorting a hash in Ruby by its value first then its key

Sorting a hash in Ruby by its value first then its key

I am trying to sort a document based on the number of times the word appears then alphabetically by the words so when it is outputted it will look something like this.Unsorted:'the', '6''we', '7''those', '5''have', '3'Sorted:'we', '7'

How can I use macros in Perl?

How can I use macros in Perl?

How do I use macros in Perl, like I do in C? Example:#define value 100 print value; I want to get the output as 100. 1:If you just want to define constants (like your example) rather than full macros, there are a couple of perl ways to d

Spring Boot SpEL ConditionalOnExpression check multiple properties

Spring Boot SpEL ConditionalOnExpression check multiple properties

How can I use Spring Expression Language to check that 2 Boolean properties are true?For example checking that a single property is true would use the syntax:@ConditionalOnExpression("${property.from.properties.file}")What would be the synt

Why emacsclient can't find socket after executing 'emacs --daemon'

Why emacsclient can't find socket after executing 'emacs --daemon'

It is so confusing that emacsclient said it can't find socket just after executing emacs --daemon in bash:$ ps aux | grep emacsshiangro 1744 0.0 0.0 2432784 604 s000 S+ 1:03下午 0:00.00 grep emacs$ /usr/local/bin/emacs --

R- converting data from fraction to decimal [duplicate]

R- converting data from fraction to decimal [duplicate]

This question already has an answer here: How to perform arithmetic on values and operators expressed as strings? 1 answer Is there a simple way to con

Generic list of generic objects

Generic list of generic objects

Let's say I have an object that represents a field of data, that object needs the following properties: Name, Type, Value, Length. Here is the object:class Field{ public string Name { get; set; } public Type Type { get

Forming Bigrams of words in list of sentences with Python

Forming Bigrams of words in list of sentences with Python

I have a list of sentences:text = ['cant railway station','citadel hotel',' police stn']. I need to form bigram pairs and store them in a variable. The problem is that when I do that, I get a pair of sentences instead of words. Here is what

Split string with string as delimiter

Split string with string as delimiter

I'm trying to split a string in a batch file using a string (rather than a character) as the delimiter.The string has the format:string1 by string2.txtThe delimiter is by (yes, space, the word 'by', followed by space). The output I want is:

Edit distance recursive algorithm — Skiena

Edit distance recursive algorithm — Skiena

I'm reading The Algorithm Design Manual by Steven Skiena, and I'm on the dynamic programming chapter. He has some example code for edit distance and uses some functions which are explained neither in the book nor on the internet. So I'm w

From compilation to runtime, how does Java String encoding really work

From compilation to runtime, how does Java String encoding really work

I recently realized that I don't fully understand Java's string encoding process.Consider the following code:public class Main{ public static void main(String[] args) { System.out.println(java.nio.charset.Charset.defaultCharset

How to put unprocessed (escaped) words inside String.Format

How to put unprocessed (escaped) words inside String.Format

I am formatting a date:str = String.Format("{0:MMM d m:mm"+yearStr+"}", dt);I want to put the word "at" after the "d", but I don't want the string to format it. I just want the word "at".How can I achieve this? 1:You can surround literal

How to use the Comparable CompareTo on Strings in Java

How to use the Comparable CompareTo on Strings in Java

I can use it to sort by emp id but I'm not sure if it is possible to compare strings. I get an error the operator is undefined for strings.public int compareTo(Emp i) { if (this.getName() == ((Emp ) i).getName()) r

What are the differences between the different Map implementations in Dart?

What are the differences between the different Map implementations in Dart?

Dart has a Map type, with implementations like HashMap, LinkedHashMap, and SplayTreeMap. What's the difference between those different Map implementations? 1:Dart has built-in support for collections like List, Set, and Map. Dart has dif