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Can someone explain this 'double negative' trick? [duplicate]
... find it highly intuitive to know what's "falsey" and what's "truthy" when cast to a Boolean.
– Chris
Jul 30 '13 at 3:15
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How to convert object array to string array in Java
... Good point. I understood the toString as just being a way of casting to a String, not the intention of actually replacing the objects with something else. If that is what you need to do, then looping is the only way.
– Yishai
Jun 19 '09 at 16:14
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Can I use if (pointer) instead of if (pointer != NULL)?
...s, so readability or conciseness isn't that much of an issue here.
Dynamic casts. Casting a base-class pointer to a particular derived-class one (something you should again try to avoid, but may at times find necessary) always succeeds, but results in a null pointer if the derived class doesn't matc...
how to convert from int to char*?
...ne, except use const as:
char const* pchar = temp_str.c_str(); //dont use cast
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Strange behavior for Map, parseInt [duplicate]
...sort of. You may use [...].map(parseFloat) or [...].map(Number). Both will cast strings to numbers in the given array. However parseFloat and Number work slightly different than parseInt: both will cast floats as well as integers, while Number will turn strings that start with digits and have other ...
C++ convert from 1 char to string? [closed]
I need to cast only 1 char to string . The opposite way is pretty simple like str[0] .
2 Answers
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error C2440: \'initializing\' : cannot convert from \'char *\' to \'co...
...har> > *'
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
//输出一行中所有字符
void printchar(string &line)
{
istringstream iss(line);
string word;
while(iss>>word)
for(vector<string>::const_...
Why don't structs support inheritance?
... The sensible solution to that problem would be to disallow the cast form Base[] to Detived[]. Just like casting from short[] to int[] is forbidden, although casting from short to int is possible.
– Niki
Aug 3 '09 at 16:34
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What are all the common undefined behaviours that a C++ programmer should know about? [closed]
...ts in the number (e.g. int64_t i = 1; i <<= 72 is undefined)
Types, Cast and Const
Casting a numeric value into a value that can't be represented by the target type (either directly or via static_cast)
Using an automatic variable before it has been definitely assigned (e.g., int i; i++; cout...
Static variables in JavaScript
...design template for classes.
It also answers your question:
function Podcast() {
// private variables
var _somePrivateVariable = 123;
// object properties (read/write)
this.title = 'Astronomy Cast';
this.description = 'A fact-based journey through the galaxy.';
this.link...