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Cannot use object of type stdClass as array?
I get a strange error using json_decode() . It decode correctly the data (I saw it using print_r ), but when I try to access to info inside the array I get:
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How do I check if a C++ std::string starts with a certain string, and convert a substring to an int?
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Use an overload of rfind which has the pos parameter:
std::string s = "tititoto";
if (s.rfind("titi", 0) == 0) {
// s starts with prefix
}
Who needs anything else? Pure STL!
Many have misread this to mean "search backwards through the whole string looking for the prefix". That would give the...
UISegmentedControl below UINavigationbar in iOS 7
...w do I make a UISegmentedControl as a part of an UINavigationBar below it? Is it connected to the UINavigationBar or is it a complete separate view just added as a subview to the UINavigationController 's view controller. Looks like it is part of the UINavigationBar since there is a shadow ...
How do I build a graphical user interface in C++? [closed]
... the command line interface and the only other language I have experience with is PHP which doesn't support GUIs.
8 Answer...
How does C compute sin() and other math functions?
...e that actually runs when you call sin() on a typical x86-64 Linux system. It is apparently faster than the fsin assembly instruction. Source code: sysdeps/ieee754/dbl-64/s_sin.c, look for __sin (double x).
This code is very complex. No one software algorithm is as fast as possible and also accurat...
Django: How to manage development and production settings?
I have been developing a basic app. Now at the deployment stage it has become clear I have need for both a local settings and production settings.
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DateTime “null” value
I've been searching a lot but couldn't find a solution. How do you deal with a DateTime that should be able to contain an uninitialized value (equivalent to null)? I have a class which might have a DateTime property value set or not. I was thinking of initializing the property holder to DateTime.Min...
How to install mongoDB on windows?
I am trying to test out mongoDB and see if it is anything for me. I downloaded the 32bit windows version, but have no idea on how to continue from now on.
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brew install mysql on macOS
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I think one can end up in this position with older versions of mysql already installed. I had the same problem and none of the above solutions worked for me. I fixed it thus:
Used brew's remove & cleanup commands, unloaded the launchctl script, then dele...
Scoping in Python 'for' loops
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The likeliest answer is that it just keeps the grammar simple, hasn't been a stumbling block for adoption, and many have been happy with not having to disambiguate the scope to which a name belongs when assigning to it within a loop construct. Variables...