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Are global variables bad? [closed]
In C/C++, are global variables as bad as my professor thinks they are?
28 Answers
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Why are preprocessor macros evil and what are the alternatives?
...er be used", "macro are evil" and so on, my question is: why? With the new C++11 is there a real alternative after so many years?
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Initialization of all elements of an array to one default value in C++?
C++ Notes: Array Initialization has a nice list over initialization of arrays. I have a
13 Answers
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Go > operators
... power of 2) in other languages, but because Go is a safer language than C/C++ it does some extra work when the shift count is a number.
Shift instructions in x86 CPUs consider only 5 bits (6 bits on 64-bit x86 CPUs) of the shift count. In languages like C/C++, the shift operator translates into a ...
Append an object to a list in R in amortized constant time, O(1)?
... list in amortized constant time, such as can be done, for example, with a C++ vector<> container. The best answer(s?) here so far only show the relative execution times for various solutions given a fixed-size problem, but do not address any of the various solutions' algorithmic efficiency di...
Declaring variables inside loops, good practice or bad practice?
...y information
The open-source tool CppCheck (a static analysis tool for C/C++ code) provides some excellent hints regarding optimal scope of variables.
In response to comment on allocation:
The above rule is true in C, but might not be for some C++ classes.
For standard types and structures, the ...
Parsing JSON from XmlHttpRequest.responseJSON
...r.responseType = 'json';
xhr.onload = function(e) {
if (this.status == 200) {
console.log('response', this.response); // JSON response
}
};
xhr.send();
Documentation for responseType
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String concatenation: concat() vs “+” operator
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Most answers here are from 2008. It looks that things have changed over the time. My latest benchmarks made with JMH shows that on Java 8 + is around two times faster than concat.
My benchmark:
@Warmup(iterations = 5, time = 200, timeUnit = TimeUni...
What is move semantics?
...oftware Engineering radio podcast interview with Scott Meyers regarding C++0x . Most of the new features made sense to me, and I am actually excited about C++0x now, with the exception of one. I still don't get move semantics ... What is it exactly?
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facebook: permanent Page Access Token?
...\"Expected end of string instead of \"?\".\" at character 11: access_toke\u200c\u200bn", "type": "OAuthException", "code": 2500, "fbtrace_id": "A8+gtSaShIO" } } Anyone knows how to resolve it????
– Lucy
Sep 27 '16 at 11:04
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