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How can I convert ereg expressions to preg in PHP?
...POSIX regular expressions (ereg) are deprecated since PHP 5.3.0, I'd like to know an easy way to convert the old expressions to PCRE (Perl Compatible Regular Expressions) (preg) .
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Application_Error not firing when customerrors = “On”
... event which executes when an error occurs and emails details of the error to myself.
9 Answers
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byte + byte = int… why?
... x + (int) y;
So, there is no + operation on bytes, bytes are first cast to integers and the result of addition of two integers is a (32-bit) integer.
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How to add an empty column to a dataframe?
What's the easiest way to add an empty column to a pandas DataFrame object? The best I've stumbled upon is something like
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Importing from builtin library when module with same name exists
...n:
- There is a module in my project_folder called calendar
- I would like to use the built-in Calendar class from the Python libraries
- When I use from calendar import Calendar it complains because it's trying to load from my module.
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Is an array name a pointer?
...ay and a pointer is a pointer, but in most cases array names are converted to pointers. A term often used is that they decay to pointers.
Here is an array:
int a[7];
a contains space for seven integers, and you can put a value in one of them with an assignment, like this:
a[3] = 9;
Here is a ...
How do I use reflection to call a generic method?
What's the best way to call a generic method when the type parameter isn't known at compile time, but instead is obtained dynamically at runtime?
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Why don't structs support inheritance?
...roblem is that, for performance and GC reasons, arrays of value types are stored "inline". For example, given new FooType[10] {...}, if FooType is a reference type, 11 objects will be created on the managed heap (one for the array, and 10 for each type instance). If FooType is instead a value type...
Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
I realize that parameterized SQL queries is the optimal way to sanitize user input when building queries that contain user input, but I'm wondering what is wrong with taking user input and escaping any single quotes and surrounding the whole string with single quotes. Here's the code:
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Do I need to heartbeat to keep a TCP connection open?
.... There can only ever be one connection at any time (though that is aside to this question). A senior developer at my company has said I need to use application level heartbeats between the two components to ensure the connection stays open.
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