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C# equivalent of the IsNull() function in SQL Server
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It's called the null coalescing (??) operator:
myNewValue = myValue ?? new MyValue();
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What does appending “?v=1” to CSS and Javascript URLs in link and script tags do?
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These are usually to make sure that the browser gets a new version when the site gets updated with a new version, e.g. as part of our build process we'd have something like this:
/Resources/Combined.css?v=x.x.x.buildnumber
Since this c...
Type List vs type ArrayList in Java [duplicate]
...tations of the List interface can be swapped. It seems that (1) is typically used in an application regardless of need (myself I always use this).
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Convert System.Drawing.Color to RGB and Hex Value
...t be null and c.R.ToString(), c.G.ToString(), and c.B.ToString() can't actually fail (the only way I can see them failing is with a NullReferenceException, and none of them can actually be null).
You could clean the whole thing up using the following:
private static String HexConverter(System.Draw...
How to convert an integer to a string in any base?
Python allows easy creation of an integer from a string of a given base via
27 Answers
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How to convert list of key-value tuples into dictionary?
...two-tuple, e.g. ('A', 1), but rather a 1916-length iterable.
Once you actually have a list in the form you stated in your original question (myList = [('A',1),('B',2),...]), all you need to do is dict(myList).
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Clone() vs Copy constructor- which is recommended in java [duplicate]
...rclass since the
Beta-release days of the Java
compiler*; and it, like all ancient
magic, requires the appropriate
incantation to prevent the spell from
unexpectedly backfiring
Prefer a method that copies the object
Foo copyFoo (Foo foo){
Foo f = new Foo();
//for all properties in F...
How to use count and group by at the same select statement
I have an sql select query that has a group by.
I want to count all the records after the group by statement.
Is there a way for this directly from sql?
For example, having a table with users I want to select the different towns and the total number of users
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NPM - How to fix “No readme data”
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Actually, in newer versions of NPM, it doesn't matter if the package is private or not. You must have a README.md file. @gustavohenke answer suits better every version.
– ViniciusPires
Dec 2...
Payment Processors - What do I need to know if I want to accept credit cards on my website? [closed]
... with my own business. If you have some network technical knowledge, it really isn't that bad. Otherwise you will be better off using Paypal or another type of service.
The process starts by getting a merchant account setup and tied to your bank account. You may want to check with your bank, bec...