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Why is address zero used for the null pointer?

...g or starting up). Programmers used this hardware protection as a form of error detection in their software, letting the CPU's address decode logic check for uninitialized or invalid pointers instead of having to spend CPU instructions to do it. The convention remains to this day, even though the ...
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How do I disable the security certificate check in Python requests

...quests.get('https://wrong.host.badssl.com/') except requests.exceptions.SSLError: print('It breaks') try: session.get('https://wrong.host.badssl.com/') except requests.exceptions.SSLError: print('It breaks here again') Note that this code closes all open adapters that handled a patche...
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Difference between a theta join, equijoin and natural join

... whereas it makes nonsense and more is against business logic and leads to error. So yes, "natural join" is dangerous. It forces you to have distinct names except for (primary/foreign) key colulmns and lose "name spacing". – LoganMzz Nov 8 '16 at 13:31 ...
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Why use HttpClient for Synchronous Connection

... some non-exception response mechanisms in your code...boring, tedious and error prone in itself. Whether it be communicating with a database, or implementing a bespoke web proxy, its 'nearly' always desirable that the Http driver just tell your application code what was returned, and leave it up to...
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Maximum Length of Command Line String

...ntered into cmd.exe, if you exceed this limit, The input line is too long. error is generated. So, answer is correct despite the fact that cmd.exe is not the only way to pass arguments for new process. share | ...
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Accessing private member variables from prototype-defined functions

...vateNamespaceClass); I'd love some feedback from anyone who sees an error with this way of doing it. share | improve this answer | follow | ...
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`levels

...t$product)) <- list(Tylenol=1:3, Advil=4:6, Bayer=7:9, Generic=10:12) # Error: could not find function "factor<-" # and this is the magic work-around that does work `levels<-`( factor(dat$product), list(Tylenol=1:3, Advil=4:6, Bayer=7:9, Generic=10:12) ) ...
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How to capture stdout output from a Python function call?

....assertEqual(out, 'DEBUG:test_logger:Test debug message') . It gives me an error: AssertionError: '' != 'Test debug message' – Eziz Durdyyev Dec 12 '19 at 15:19 ...
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How do I view all commits for a specific day?

...og --pretty='format:%H %an %ae %ai' | grep 2013-11-12 Not 100% immune to errors as the same string could have been entered by a user. But acceptable depending on which placeholders are used. The snippet above would not fail, for instance. One could as well just parse the whole git log to JSON and...
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Objective-C ARC: strong vs retain and weak vs assign

... In fact, under ARC it is a compilation error to use assign for an object. You have to use either weak or unsafe_unretained (which is unsafe, obviously) if you don't want to retain the property. – cobbal Jan 19 '12 at 15:07 ...