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How to test if a string is JSON or not?
I have a simple AJAX call, and the server will return either a JSON string with useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message.
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Get value from SimpleXMLElement Object
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You have to cast simpleXML Object to a string.
$value = (string) $xml->code[0]->lat;
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Multiple file-extensions searchPattern for System.IO.Directory.GetFiles
...ollection of file names that
/// meet given filter</returns>
public string[] getFiles(string SourceFolder, string Filter,
System.IO.SearchOption searchOption)
{
// ArrayList will hold all file names
ArrayList alFiles = new ArrayList();
// Create an array of filter string
string[] Multip...
MetadataException: Unable to load the specified metadata resource
...ption on instantiating my generated ObjectContext class. The connection string in App.Config looks correct - hasn't changed since last it worked - and I've tried regenerating a new model (edmx-file) from the underlying database with no change.
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Writing/outputting HTML strings unescaped
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Supposing your content is inside a string named mystring...
You can use:
@Html.Raw(mystring)
Alternatively you can convert your string to HtmlString or any other type that implements IHtmlString in model or directly inline and use regular @:
@{ var myHtml...
ValueError: invalid literal for int() with base 10: ''
... asking how one could prevent a ValueError when you call int() on an empty string. "Use float() instead" doesn't solve that problem. You still get a ValueError.
– Kevin
May 1 '18 at 18:50
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Escape single quote character for use in an SQLite query
...ES (123, 'Hello there''s');
Relevant quote from the documentation:
A string constant is formed by enclosing the string in single quotes ('). A single quote within the string can be encoded by putting two single quotes in a row - as in Pascal. C-style escapes using the backslash character are n...
Why does Convert.ToString(null) return a different value if you cast null?
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There are 2 overloads of ToString that come into play here
Convert.ToString(object o);
Convert.ToString(string s);
The C# compiler essentially tries to pick the most specific overload which will work with the input. A null value is convertible to a...
How to remove all characters after a specific character in python?
I have a string. How do I remove all text after a certain character? ( In this case ... )
The text after will ... change so I that's why I want to remove all characters after a certain one.
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Create an instance of a class from a string
...of the class at runtime. Basically I would have the name of the class in a string.
8 Answers
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