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Print variables in hexadecimal or decimal format
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Objective-C implicit conversion loses integer precision 'NSUInteger' (aka 'unsigned long') to 'int'
...unt;
or (if you are sure that your array will never contain more than 2^31-1 elements!),
add an explicit cast:
int count = (int)[myColors count];
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Change Circle color of radio button
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More simple, just set the buttonTint color: (only works on api level 21 or above)
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radio"
android:checked="true"
android:buttonTint="@color/your_color"/>
in your va...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++STL容器使用经验总结第1条：慎重选择容器类型。标准STL序列容器：vector、string、deque和list。标准STL关联容器：set、multiset、map和multimap。非标准序列容...
第1条：慎重选择容器类型。
标准STL序列容器：vector、string、deque和list...
What does dot (.) mean in a struct initializer?
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144
This is a C99 feature that allows you to set specific fields of the struct by name in an initi...
How to detect duplicate values in PHP array?
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10 Answers
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How to round up a number to nearest 10?
How can we round off a number to the nearest 10 in php?
16 Answers
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Is returning by rvalue reference more efficient?
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Beta_ab&&
Beta::toAB() const {
return move(Beta_ab(1, 1));
}
This returns a dangling reference, just like with the lvalue reference case. After the function returns, the temporary object will get destructed. You should return Beta_ab by value, like the following
Beta_ab...
List of Rails Model Types
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251
The attributes are SQL types, hence the following are supported:
:binary
:boolean
:date
:datet...
Creating a expressjs middleware that accepts parameters
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157
function HasRole(role) {
return function(req, res, next) {
if (role !== req.user.role) r...