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Func delegate with no return type
...nc delegates return something; all the Action delegates return void.
Func<TResult> takes no arguments and returns TResult:
public delegate TResult Func<TResult>()
Action<T> takes one argument and does not return a value:
public delegate void Action<T>(T obj)
Action is ...
Laravel Redirect Back with() Message
...'The Message']);
and inside your view call this
@if($errors->any())
<h4>{{$errors->first()}}</h4>
@endif
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How to use ng-repeat for dictionaries in AngularJs?
...
You can use
<li ng-repeat="(name, age) in items">{{name}}: {{age}}</li>
See ngRepeat documentation. Example: http://jsfiddle.net/WRtqV/1/
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Sending emails in Node.js? [closed]
...pass: "gmail_password"
}
});
var mail = {
from: "Yashwant Chavan <from@gmail.com>",
to: "to@gmail.com",
subject: "Send Email Using Node.js",
text: "Node.js New world for me",
html: "<b>Node.js New world for me</b>"
}
smtpTransport.sendMail(mail, function(e...
Linq: What is the difference between Select and Where
...
Where
finds items that match and only returns those that do (filtering).
-> IEnumerable<A> in, IEnumerable<A> out
Select
returns something for all items in the source (projection / transformation). That something might be the items themselves, but are more usually a pr...
Difference between if () { } and if () : endif;
...e, in my .phtml files (Zend Framework) I will write something like this:
<?php if($this->value): ?>
Hello
<?php elseif($this->asd): ?>
Your name is: <?= $this->name ?>
<?php else: ?>
You don't have a name.
<?php endif; ?>
...
How to access random item in list?
...
public static class EnumerableExtension
{
public static T PickRandom<T>(this IEnumerable<T> source)
{
return source.PickRandom(1).Single();
}
public static IEnumerable<T> PickRandom<T>(this IEnumerable<T> source, int count)
{
retur...
How to test code dependent on environment variables using JUnit?
...ting for Maven based project. Below is the entry I made in POM file.
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
...
Why use static_cast(x) instead of (int)x?
... that classic C casts make no distinction between what we call static_cast<>(), reinterpret_cast<>(), const_cast<>(), and dynamic_cast<>(). These four things are completely different.
A static_cast<>() is usually safe. There is a valid conversion in the language, or an...
How to automatically generate a stacktrace when my program crashes
...h to print a stacktrace and exit gracefully when you get a segmentation fault. Documentation can be found in the libc manual.
Here's an example program that installs a SIGSEGV handler and prints a stacktrace to stderr when it segfaults. The baz() function here causes the segfault that triggers th...