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What is the logic behind the “using” keyword in C++?
...or type alias is identical to typedef.
7.1.3.2
A typedef-name can also be introduced by an alias-declaration. The
identifier following the using keyword becomes a typedef-name and the
optional attribute-specifier-seq following the identifier appertains
to that typedef-name. It has the same semantic...
Readonly Properties in Objective-C?
I have declared a readonly property in my interface as such:
7 Answers
7
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What's the difference between Task.Start/Wait and Async/Await?
...d is nothing more than what you're already used to: breaking up big tasks into little bits, queueing them up, and executing all the little bits in some order. Some of those executions cause other work to be queued up, and life goes on. One thread!
– Eric Lippert
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C++ auto keyword. Why is it magic?
...emplates. Consider a function template like this:
template<class T>
int whatever(T t) {
// point A
};
At point A, a type has been assigned to T based on the value passed for the parameter to whatever. When you do auto x = initializer;, the same type deduction is used to determine the t...
How to programmatically set maxLength in Android TextView?
...r used it for textview, only edittext :
TextView tv = new TextView(this);
int maxLength = 10;
InputFilter[] fArray = new InputFilter[1];
fArray[0] = new InputFilter.LengthFilter(maxLength);
tv.setFilters(fArray);
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Android global variable
... class MyProperties {
private static MyProperties mInstance= null;
public int someValueIWantToKeep;
protected MyProperties(){}
public static synchronized MyProperties getInstance() {
if(null == mInstance){
mInstance = new MyProperties();
}
return mInstance;
...
How to properly create composite primary keys - MYSQL
Here is a gross oversimplification of an intense setup I am working with. table_1 and table_2 both have auto-increment surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 .
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How to make a edittext box in a dialog
... my confusion it thought you had custom dialog . public void onClick(DialogInterface dialog its the dialoginterface. using that is not a problem you click the negative button to dismiss the alertdialog.
– Raghunandan
Sep 14 '13 at 7:47
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Python's most efficient way to choose longest string in list?
...can use max:
>>> mylist = ['123','123456','1234']
>>> print max(mylist, key=len)
123456
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How do I declare class-level properties in Objective-C?
... instead of - so your implementation would look something like:
// Foo.h
@interface Foo {
}
+ (NSDictionary *)dictionary;
// Foo.m
+ (NSDictionary *)dictionary {
static NSDictionary *fooDict = nil;
if (fooDict == nil) {
// create dict
}
return fooDict;
}
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