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Extracting the last n characters from a string in R
How can I get the last n characters from a string in R?
Is there a function like SQL's RIGHT?
15 Answers
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How to allow to accept only image files?
...t is very sketchy on mobiles (as of 2015) and by some reports this may actually prevent some mobile browsers from uploading anything at all, so be sure to test your target platforms well.
For detailed browser support, see http://caniuse.com/#feat=input-file-accept
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How to store custom objects in NSUserDefaults
...g from NSUserDefaults:
- (void)saveCustomObject:(MyObject *)object key:(NSString *)key {
NSData *encodedObject = [NSKeyedArchiver archivedDataWithRootObject:object];
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject:encodedObject forKey:key];
[def...
Write a function that returns the longest palindrome in a given string
...hm in O(n) time! Its implementation can be found here and here.
For input String s = "HYTBCABADEFGHABCDEDCBAGHTFYW1234567887654321ZWETYGDE" it finds the correct output which is 1234567887654321.
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SQL UPDATE all values in a field with appended string CONCAT not working
...iguous example would be: UPDATE table SET column_name=concat(column_name, 'string');
– Kiky Rodriguez
Dec 11 '18 at 19:09
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Auto Resize Image in CSS FlexBox Layout and keeping Aspect Ratio?
... it also possible to do this for the height dimension if the screen gets smaller?
– confile
Jan 14 '14 at 0:43
@confil...
check if jquery has been loaded, then load it if false
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I believe appending a script tag to body works in all browsers.
– Steven Lu
Jan 6 '13 at 21:26
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Opening Android Settings programmatically
How can I open settings programmatically?
11 Answers
11
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Convert List into Comma-Separated String
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Enjoy!
Console.WriteLine(String.Join(",", new List<uint> { 1, 2, 3, 4, 5 }));
First Parameter: ","
Second Parameter: new List<uint> { 1, 2, 3, 4, 5 })
String.Join will take a list as a the second parameter and join all of the elements ...
Cannot set some HTTP headers when using System.Net.WebRequest
... method which solves the problem by allowing you to set any header via its string name.
Usage
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
request.SetRawHeader("content-type", "application/json");
Extension Class
public static class HttpWebRequestExtensions
{
static s...