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Split List into Sublists with LINQ
...n Enumerable.Range(1, int.MaxValue)
.Select(x => x + new string('x', 100000))
.Clump(10000).Skip(100).First())
{
Console.Write('.');
}
// OutOfMemoryException
Finally, any implementation should be able to handle out of order iteration of chunks, for example:
En...
Convert data.frame column format from character to factor
... the format (class) of some columns of my data.frame object ( mydf ) from charactor to factor .
6 Answers
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How to HTML encode/escape a string? Is there a built-in?
I have an untrusted string that I want to show as text in an HTML page. I need to escape the chars ' < ' and ' & ' as HTML entities. The less fuss the better.
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ruby 1.9: invalid byte sequence in UTF-8
...
In Ruby 1.9.3 it is possible to use String.encode to "ignore" the invalid UTF-8 sequences. Here is a snippet that will work both in 1.8 (iconv) and 1.9 (String#encode) :
require 'iconv' unless String.method_defined?(:encode)
if String.method_defined?(:encode)
...
Read and parse a Json File in C#
...{
using (StreamReader r = new StreamReader("file.json"))
{
string json = r.ReadToEnd();
List<Item> items = JsonConvert.DeserializeObject<List<Item>>(json);
}
}
public class Item
{
public int millis;
public string stamp;
public DateTime datet...
What is simplest way to read a file into String? [duplicate]
I am trying to read a simple text file into a String. Of course there is the usual way of getting the input stream and iterating with readLine() and reading contents into String.
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A quick and easy way to join array elements with a separator (the opposite of split) in Java [duplic
...
Using Java 8 you can do this in a very clean way:
String.join(delimiter, elements);
This works in three ways:
1) directly specifying the elements
String joined1 = String.join(",", "a", "b", "c");
2) using arrays
String[] array = new String[] { "a", "b", "c" };
String ...
PostgreSQL: How to change PostgreSQL user password?
...ere's a difference, and in a DML query you have to use ' when dealing with strings, but is there a special reason to use both of them here?
– Boyan
Mar 23 '16 at 11:17
8
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MVC (Laravel) where to add logic
...extends Controller
{
/**
* Creates a new post.
*
* @return string
*/
public function store(PostRequest $request)
{
if ($request->persist(new Post())) {
flash()->success('Successfully created new post!');
} else {
flash()->e...
Generate random 5 characters string
I want to create exact 5 random characters string with least possibility of getting duplicated. What would be the best way to do it? Thanks.
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