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Difference between fold and reduce?
...e initial accumulator value.
This means the accumulator and therefore result type must match the list element type, whereas they can differ in fold as the accumulator is provided separately. This is reflected in the types:
List.fold : ('State -> 'T -> 'State) -> 'State -> 'T list ->...
Remove empty elements from an array in Javascript
...tion was answered almost nine years ago when there were not many useful built-in methods in the Array.prototype.
Now, certainly, I would recommend you to use the filter method.
Take in mind that this method will return you a new array with the elements that pass the criteria of the callback functi...
Does Python have “private” variables in classes?
...
It's cultural. In Python, you don't write to other classes' instance or class variables. In Java, nothing prevents you from doing the same if you really want to - after all, you can always edit the source of the class itself to ac...
Java: How to get input from System.console()
...
(1) By default the delimiter of Scanner is space, so when user enters multiple texts, it will cause the software to proceed to next few next() and the logic in our software will be wrong. (2) If I use nextLine() to read the whole full se...
“Auto Layout still required after executing -layoutSubviews” with UITableViewCell subclass
...tegory into projects fixes things. It helped in a test project.
#import <objc/runtime.h>
#import <objc/message.h>
@implementation UITableViewCell (FixUITableViewCellAutolayoutIHope)
+ (void)load
{
Method existing = class_getInstanceMethod(self, @selector(layoutSubviews));
Met...
Practical uses of git reset --soft?
...er project, and the subsequently keep the subproject up to date. It is an alternative to git submodules.
The octopus merge strategy can be used to merge three or more branches. The normal strategy can merge only two branches and if you try to merge more than that, git automatically falls back to ...
python max function using 'key' and lambda expression
...ply returns the object that is the largest.
How does key work?
By default in Python 2 key compares items based on a set of rules based on the type of the objects (for example a string is always greater than an integer).
To modify the object before comparison, or to compare based on a particular...
How can I convert immutable.Map to mutable.Map in Scala?
...ons) and back into a persistent one in O(1) steps. This looks to be O(n), although that depends of course on how clever the implementation of ++ is.
– Jörg W Mittag
Feb 18 '11 at 15:34
...
How to list only the file names that changed between two commits?
...terested in just what happened to certain files/folders you can append -- <filename> [<filename>...] to the git log version.
if you want to see what happened for a single commit, call it SHA1, then do
git log --name-status --oneline [SHA1^..SHA1]
File status flags:
M modified - Fil...
How to force a line break in a long word in a DIV?
... the browser compatibility
word-break: break-all;
Also you can use the <wbr> tag
<wbr> (word break) means: "The browser
may insert a line break here, if it
wishes." It the browser does not think
a line break necessary nothing
happens.
...