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Why is it impossible to build a compiler that can determine if a C++ function will change the value
... if (bar() == 0) this->a = 1;
}
How can a compiler determine, just from looking at that code, whether foo will ever change a? Whether it does or doesn't depends on conditions external to the function, namely the implementation of bar. There's more than that to the proof that the halting prob...
What is the rationale for all comparisons returning false for IEEE754 NaN values?
Why do comparisons of NaN values behave differently from all other values?
That is, all comparisons with the operators ==, =, where one or both values is NaN returns false, contrary to the behaviour of all other values.
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How to use the same C++ code for Android and iOS?
...eturns it. The idea is, iOS will send "Obj-C" and Android will send "Java" from their respective languages, and the CPP code will create a text as a follow "cpp says hello to << text received >>".
Shared CPP code
First of all, we are going to create the shared CPP code, doing it we hav...
Python matplotlib multiple bars
...
import matplotlib.pyplot as plt
from matplotlib.dates import date2num
import datetime
x = [
datetime.datetime(2011, 1, 4, 0, 0),
datetime.datetime(2011, 1, 5, 0, 0),
datetime.datetime(2011, 1, 6, 0, 0)
]
x = date2num(x)
y = [4, 9, 2]
z = [1, 2...
Example invalid utf8 string?
... Octet Sequence (but not Unicode!)' => "\xfc\xa1\xa1\xa1\xa1\xa1",
);
From http://www.php.net/manual/en/reference.pcre.pattern.modifiers.php#54805
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When should I use OWIN Katana?
...redistributable middlewares that can impact the request/response coming to/from your application, but keep these modules separated from the application code.
To persuade yourself of the benefits of this modular approach, take a look at the nuget packages available for OWIN : http://www.nuget.org/p...
Android: When is onCreateOptionsMenu called during Activity lifecycle?
...lated)
That test will break very shortly, once Ice Cream Sandwich ships. From what I can tell, ICS phones will have action bars (though perhaps not system bars).
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How do I run git log to see changes only for a specific branch?
... @HighwayofLife: --no-merges may appear that it's only showing commits from a specific branch, but it's really only showing commits that did not result in a merge
– rynmrtn
Apr 8 '13 at 20:16
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Java / Android - How to print out a full stack trace?
...id (Java) how do I print out a full stack trace? If my application crashes from nullPointerException or something, it prints out a (almost) full stack trace like so:
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Installing Google Protocol Buffers on mac
...sion 2.5.0 has been installed. Is it possible to install the older version from terminal.
14 Answers
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