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How to solve PHP error 'Notice: Array to string conversion in…'

...n $_POST['C']. So when you echo that, you are trying to print an array, so all it does is print Array and a notice. To print properly an array, you either loop through it and echo each element, or you can use print_r. Alternatively, if you don't know if it's an array or a string or whatever, you c...
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C# binary literals

... @Dai that’s no different than hex literals. In other words, all constants are big endian, but stored little endian on Intel/AMD and most ARMs. 0xDEADBEEF will be stored as 0xEF 0xBE 0xAD 0xDE – Cole Johnson Sep 2 '19 at 18:28 ...
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Delete/Reset all entries in Core Data?

Do you know of any way to delete all of the entries stored in Core Data? My schema should stay the same; I just want to reset it to blank. ...
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What's the cause of this FatalExecutionEngineError in .NET 4.5 beta? [closed]

The sample code below occurred naturally. Suddenly my code thew a very nasty-sounding FatalExecutionEngineError exception. I spent a good 30 minutes trying to isolate and minimize the culprit sample. Compile this using Visual Studio 2012 as a console app: ...
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ExpressJS How to structure an application?

... December 2016 How big is your application? Web applications are not all the same, and there's not, in my opinion, a single code structure that should be applied to all express.js applications. If your application is small, you don't need such a deep directory structure as exemplified here. J...
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What is the best regular expression to check if a string is a valid URL?

... I wrote my URL (actually IRI, internationalized) pattern to comply with RFC 3987 (http://www.faqs.org/rfcs/rfc3987.html). These are in PCRE syntax. For absolute IRIs (internationalized): /^[a-z](?:[-a-z0-9\+\.])*:(?:\/\/(?:(?:%[0-9a-f][0-9a-f]...
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.NET NewtonSoft JSON deserialize map to a different property name

... Json.NET has a JsonPropertyAttribute which allows you to specify the name of a JSON property, so your code should be: public class TeamScore { [JsonProperty("eighty_min_score")] public string EightyMinScore { get; set; } [JsonProperty("home_or_away")] ...
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Convert objective-c typedef to its string equivalent

... This is really a C question, not specific to Objective-C (which is a superset of the C language). Enums in C are represented as integers. So you need to write a function that returns a string given an enum value. There are many ways to...
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Using the Underscore module with Node.js

...rom Underscore, it overwrites the _ object with the result of my function call. Anyone know what's going on? For example, here is a session from the node.js REPL: ...
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No generic implementation of OrderedDictionary?

...s methods for sorting the way that List<T> does since this is essentially a hybrid IList and IDictionary. I've included my implementation here for posterity. Here's the interface. Notice that it includes System.Collections.Specialized.IOrderedDictionary, which is the non-generic version of t...