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Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
I see this a lot in tutorials, with navigation properties as ICollection<T> .
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When should I use Lazy?
I found this article about Lazy : Laziness in C# 4.0 – Lazy
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string to string array conversion in java
I have a string = "name";
I want to convert into a string array.
How do I do it?
Is there any java built in function? Manually I can do it but I'm searching for a java built in function.
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How to get users to read error messages?
If you program for a nontechnical audience, you find yourself at a high risk that users will not read your carefully worded and enlightening error messages, but just click on the first button available with a shrug of frustration.
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'echo' without newline in a shell script
I have a problem with echo in my script:
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Codesign error: Certificate identity appearing twice
...ficate identity 'iPhone Developer: XXXX (12345678)' appears more than once in the keychain. The codesign tool requires there only be one.
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How do I check if an array includes a value in JavaScript?
What is the most concise and efficient way to find out if a JavaScript array contains a value?
54 Answers
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How to quickly check if folder is empty (.NET)?
...e to check, if directory on disk is empty. It means, that it does not contain any folders/files. I know, that there is a simple method. We get array of FileSystemInfo's and check if count of elements equals to zero. Something like that:
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How to access the correct `this` inside a callback?
...t you should know about this
this (aka "the context") is a special keyword inside each function and its value only depends on how the function was called, not how/when/where it was defined. It is not affected by lexical scopes like other variables (except for arrow functions, see below). Here are so...
How to perform .Max() on a property of all objects in a collection and return the object with maximu
I have a list of objects that have two int properties. The list is the output of another linq query. The object:
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