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Spring - @Transactional - What happens in background?
...s you observed, through, the proxy mechanism only works when calls come in from some external object. When you make an internal call within the object, you're really making a call through the "this" reference, which bypasses the proxy. There are ways of working around that problem, however. I explai...
How can I use map and receive an index as well in Scala?
...h{ case (e, i) => println(i+" "+e) }
0 Mary
1 had
2 a
3 little
4 lamb
From: http://www.artima.com/forums/flat.jsp?forum=283&thread=243570
You also have variations like:
for((e,i) <- List("Mary", "had", "a", "little", "lamb").zipWithIndex) println(i+" "+e)
or:
List("Mary", "had", "a...
Set transparent background of an imageview on Android
...
If you add any number from 01 to 99 before the actual hash code, it will give you the transparency. Eg: Black with more transparency - #10000000 Black with less transparency - #99000000
– AnhSirk Dasarp
...
Django template how to look up a dictionary value with a variable
...
Write a custom template filter:
from django.template.defaulttags import register
...
@register.filter
def get_item(dictionary, key):
return dictionary.get(key)
(I use .get so that if the key is absent, it returns none. If you do dictionary[key] it will...
Should I implement __ne__ in terms of __eq__ in Python?
...ks to not properly delegating; instead of treating a NotImplemented return from one side as a cue to delegate to __ne__ on the other side, not self == other is (assuming the operand's __eq__ doesn't know how to compare the other operand) implicitly delegating to __eq__ from the other side, then inve...
Is it possible to use argsort in descending order?
...ve that the big elements are coming last in the argsort. So, you can read from the tail of the argsort to find the n highest elements:
avgDists.argsort()[::-1][:n]
Both methods are O(n log n) in time complexity, because the argsort call is the dominant term here. But the second approach has a ...
Should I use tag for icons instead of ? [closed]
... ("Here at Twitter, this is what we call a reply arrow.") And it is a term from another language: a symbolic language.
If, instead of the arrow symbol, Twitter used <i>shout out</i> or <i>[Japanese character for reply]</i> (on an English page), that would be consistent with...
What's the fastest way to read a text file line-by-line?
...ify FileOptions. For example, if you are reading a large file sequentially from beginning to end, you may benefit from FileOptions.SequentialScan. Again, benchmarking is the best thing you can do.
Using File.ReadLines
This is very much like your own solution except that it is implemented using a S...
Can I find out the return value before returning while debugging in Intellij?
... Since at least 2016.3, there is a much better way. See answer from Birchlabs for details. It should now be the accepted answer.
– Mikezx6r
Nov 4 '19 at 13:15
add ...
Inline functions in C#?
...ssary
The compiler tends to know better than you do when something should, from a performance standpoint, be inlined
It's best to leave things alone and let the compiler do its work, then profile and figure out if inline is the best solution for you. Of course, some things just make sense to be i...