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How to check for a valid Base64 encoded string

... way in C# to see if a string is Base 64 encoded other than just trying to convert it and see if there is an error? I have code code like this: ...
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Convert to absolute value in Objective-C

How do I convert a negative number to an absolute value in Objective-C? 2 Answers 2 ...
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How do I search an SQL Server database for a string?

... From ReplaceTableName Where Convert(nVarChar(4000), [ReplaceColumnName]) = ''' + @DataToFind + ''' ) Set @DataExists = ...
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Swift: Testing optionals for nil

...rror, the type UInt8 is not optional (note no '?') and therefore cannot be converted to nil. Make sure the variable you're working with is an optional before you treat it like one. share | improve t...
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How do I concatenate two arrays in C#?

... This is what happens without the toArray() Cannot implicitly convert type 'System.Collections.Generic.IEnumerable<string>' to 'string[]'. An explicit conversion exists (are you missing a cast?) – Tibor Udvari Jun 16 '15 at 11:32 ...
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Max return value if empty query

...n empty sequence but complaining that the materialized value NULL can't be converted into an int. share | improve this answer | follow | ...
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json_decode to array

...e PHP Documentation json_decode function has a parameter named assoc which convert the returned objects into associative arrays mixed json_decode ( string $json [, bool $assoc = FALSE ] ) Since assoc parameter is FALSE by default, You have to set this value to TRUE in order to retrieve an arra...
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How to make rounded percentages add up to 100%

...m - rounded.Sum(); if (delta == 0) return rounded; var deltaUnit = Convert.ToDecimal(Math.Pow(0.1, decimals)) * Math.Sign(delta); List<int> applyDeltaSequence; if (delta < 0) { applyDeltaSequence = original .Zip(Enumerable.Range(0, int.MaxValue), (x...
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DTO = ViewModel?

...posted to those methods and with some MVC magic, the data is automatically converted to DTOs before being passed to the methods. Do you think it is wrong to use DTOs in this case. Should ViewModels be used with a Web API? I am asking to better understand, because I am still not all that familiar wit...
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Easiest way to compare arrays in C#

...o(a2, StructuralComparisons.StructuralEqualityComparer)); Getting: cannot convert from 'System.Collections.IEqualityComparer' to 'System.Collections.IComparer' – shindigo Mar 21 '16 at 15:55 ...