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Java optional parameters
...ate optional parameters in Java:
Method overloading.
void foo(String a, Integer b) {
//...
}
void foo(String a) {
foo(a, 0); // here, 0 is a default value for b
}
foo("a", 2);
foo("a");
One of the limitations of this approach is that it doesn't work if you have two optional parameters...
What exactly does the .join() method do?
... using the JOIN method, we can add the distance between the words and also convert the list to the string.
This is Python output
'my name is kourosh'
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Choice between vector::resize() and vector::reserve()
...fragile or not according to how difficult you've made it for yourself to maintain the required property. Something like x.reserve(x.size() + newdata); vector<int>::iterator special_element = get_special_element(x); for (int i = 0; i < newdata; ++i) { if some_function(i, special_element) x.p...
How to set top-left alignment for UILabel for iOS application?
...rticalAlignmentMiddle,
VerticalAlignmentBottom,
} VerticalAlignment;
@interface SOLabel : UILabel
@property (nonatomic, readwrite) VerticalAlignment verticalAlignment;
@end
SOLabel.m
@implementation SOLabel
-(id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
...
Count number of rows within each group
... standard nowadays to use .() instead of list() and setDT() to convert a data.frame to data.table. So in one step setDT(df)[, .N, by = .(year, month)].
– sindri_baldur
Sep 27 '19 at 11:33
...
How do lexical closures work?
... * j
return func
flist.append(funcC(i))
for f in flist:
print f(2)
This is what happens when you mix side effects and functional programming.
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What data type to use for money in Java? [closed]
...
What about serialization and saving into db? What format should be used for sending over wire?
– Paweł Szczur
Dec 7 '15 at 11:28
1
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ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
...the context.
// User -> Receipt validation
private bool canUserAccessA(int aID)
{
int userID = WebSecurity.GetUserId(User.Identity.Name);
int aFound = db.Model.AsNoTracking().Where(x => x.aID == aID && x.UserID==userID).Count();
return (aFound > 0); //if aFound > 0,...
Overriding superclass property with different type in Swift
... racingChassis = newRacingChassis
} else {
println("incorrect chassis type for racecar")
}
}
}
}
It seems one cannot declare a property with the let syntax and override it with var in it’s subclass or vice-versa, which may be because the supe...
#1071 - Specified key was too long; max key length is 1000 bytes
...and certainly no need to index the full length of 255 characters.
PS: The INT(1) and INT(32) data types indicates another misunderstanding about MySQL. The numeric argument has no effect related to storage or the range of values allowed for the column. INT is always 4 bytes, and it always allows ...