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Why won't my PHP app send a 404 error?

...04s. The problem is, once the web server starts processing the PHP page, it's already passed the point where it would handle a 404 User: Hey, do you have anything for me at this URI webserver? Webserver: Yes, I do, it's a PHP page. It'll tell you what the response code is PHP: Hey, OMG 404!!!!!...
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Python: reload component Y imported with 'from X import Y'?

...import X , and the module changes on the outside, I can reload the module with reload(X) . The changes then become available in my interpreter session. ...
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jQuery - replace all instances of a character in a string [duplicate]

This does not work and I need it badly 3 Answers 3 ...
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g++ undefined reference to typeinfo

I just ran across the following error (and found the solution online, but it's not present in Stack Overflow): 17 Answers ...
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Check if object is a jQuery object

...emented as a constructor function. Constructor functions are to be called with the new prefix. When you call $(foo), internally jQuery translates this to new jQuery(foo)1. JavaScript proceeds to initialize this inside the constructor function to point to a new instance of jQuery, setting it's prope...
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Is “else if” a single keyword?

I am new to C++. I often see conditional statement like below: 8 Answers 8 ...
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Gradle does not find tools.jar

I am using javadoc doclets with gradle, so I need to use the package tools.jar, which is in the lib folder from the jdk (1.6.0_26 in my case). ...
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class method generates “TypeError: … got multiple values for keyword argument …”

If I define a class method with a keyword argument thus: 7 Answers 7 ...
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Proper Repository Pattern Design in PHP?

Preface: I'm attempting to use the repository pattern in an MVC architecture with relational databases. 11 Answers ...
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How to know if an object has an attribute in Python

... Try hasattr(): if hasattr(a, 'property'): a.property EDIT: See zweiterlinde's answer below, who offers good advice about asking forgiveness! A very pythonic approach! The general practice in python is that, if the property is likely to be there most of the time, simply call it ...