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In Java, what does NaN mean?
...the value being converted is something else, for example when converting a string that does not represent a number.
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HashSet vs LinkedHashSet
...n item
LinkedHashSet maintain the order of insertion item
Example
Set<String> set = ...;// using new HashSet<>() OR new LinkedHashSet<>()
set.add("2");
set.add("1");
set.add("ab");
for(String value : set){
System.out.println(value);
}
HashSet output
1
ab
2
LinkedHashSet...
Why does Assert.AreEqual(T obj1, Tobj2) fail with identical byte arrays
...e[0];
byte[] array2 = new byte[0];
Assert.AreEqual(System.Convert.ToBase64String(array1),
System.Convert.ToBase64String(array2));
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How to check programmatically if an application is installed or not in Android?
...ently installed.");
}
}
private boolean appInstalledOrNot(String uri) {
PackageManager pm = getPackageManager();
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
return true;
} catch (PackageManager.NameNotFoundException e)...
Change File Extension Using C#
... Path.ChangeExtension("c:/my documents/my images/cars/a where a is a.jpg", string.Empty) will remove the extension from the path defined as the first method parameter; the newPath string variable will contain c:/my documents/my images/cars/a where a is a. value after this operation.
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How to format an inline code in Confluence?
...ed" option applies to the entire line. The only way to do it (without installing the wikitext editing plugin) is to pick monospaced font.
– HDave
Mar 27 '13 at 17:14
16
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Find the min/max element of an Array in JavaScript
...ES7 or ES8 spec Array.max and Array.min. Unlike this version, they work on strings. Your future colleague tries to get the alphabetically-latest string in an array with the now-well-documented native .max() method, but mysteriously gets NaN. Hours later, she finds this code, runs a git blame, and cu...
Swift and mutating struct
... var)
Consider Swift's Array struct (yes it's a struct).
var petNames: [String] = ["Ruff", "Garfield", "Nemo"]
petNames.append("Harvey") // ["Ruff", "Garfield", "Nemo", "Harvey"]
let planetNames: [String] = ["Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune"]
planetNam...
'Static readonly' vs. 'const'
...me I work with XML, there's a namespaces file with a bunch of public const string.) But in general, public const should only be used after considering the implications properly.
– Michael Stum♦
Jul 22 '17 at 18:41
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What are best practices for using SmtpClient, SendAsync and Dispose under .NET 4.0
...end email asynchronously is as the following:
public async Task SendEmail(string toEmailAddress, string emailSubject, string emailMessage)
{
using (var message = new MailMessage())
{
message.To.Add(toEmailAddress);
message.Subject = emailSubject;
message.Body = emai...