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Ruby: Merging variables in to a string
...l] # using %-operator
res = sprintf(fmt, animal, action, other_animal) # call Kernel.sprintf
You can even explicitly specify the argument number and shuffle them around:
'The %3$s %2$s the %1$s' % ['cat', 'eats', 'mouse']
Or specify the argument using hash keys:
'The %{animal} %{action} the ...
If string is empty then return some default value
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It will be executed when making the original call, not with the ternary operator. All the arguments will be evaluated on method call.
– Tonttu
Jan 27 '11 at 15:07
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How can I prevent SQL injection in PHP?
...his way it is impossible for an attacker to inject malicious SQL.
You basically have two options to achieve this:
Using PDO (for any supported database driver):
$stmt = $pdo->prepare('SELECT * FROM employees WHERE name = :name');
$stmt->execute([ 'name' => $name ]);
foreach ($stmt as ...
Instantiating object of type parameter
...n it is constructed instead of passing it into your method each time it is called.
interface MyFactory<T>
{
T newObject();
}
class MyClass<T>
{
T field;
public void myMethod(MyFactory<T> factory)
{
field = factory.newObject()
}
}
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MySQL - why not index every field?
...ly I've learned the wonder of indexes, and performance has improved dramatically. However, with all I've learned, I can't seem to find the answer to this question.
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Difference between DTO, VO, POJO, JavaBeans?
...ponents for Java that can be manipulated visually in a builder tool. Practically, they are classes written in the Java programming language conforming to a particular convention. They are used to encapsulate many objects into a single object (the bean), so that they can be passed around as a single ...
How can I get a precise time, for example in milliseconds in Objective-C?
...s, so you wouldn't be able to trust the result. You really want a monotonically increasing clock, don't you?
– Kristopher Johnson
Sep 19 '12 at 11:12
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How to serialize a lambda?
...ble)() -> System.out.println("Serializable!");
And the lambda automagically becomes serializable.
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More than 10 lines in a node.js stack error?
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If you'd like to see stack trace that spans over setTimeout/setInterval calls, then more sophisticated https://github.com/mattinsler/longjohn would be the way to go.
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How can I tell Moq to return a Task?
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Your method doesn't have any callbacks so there is no reason to use .CallBack(). You can simply return a Task with the desired values using .Returns() and Task.FromResult, e.g.:
MyType someValue=...;
mock.Setup(arg=>arg.DoSomethingAsync())
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