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Delete directories recursively in Java
... .forEach(File::delete);
We use a comparator for reversed order, otherwise File::delete won't be able to delete possibly non-empty directory. So, if you want to keep directories and only delete files just remove the comparator in sorted() or remove sorting completely and add files f...
Comparing two dictionaries and checking how many (key, value) pairs are equal
... good idea, because the items in a dictionary are not supposed to have any order. You might be comparing [('a',1),('b',1)] with [('b',1), ('a',1)] (same dictionaries, different order).
For example, see this:
>>> x = dict(a=2, b=2,c=3, d=4)
>>> x
{'a': 2, 'c': 3, 'b': 2, 'd': 4}
&...
Python nonlocal statement
...rstensen you could pass the function as an arg that's the beauty of higher order functions. Also in functional programming this is called composition, python is not a pure FP language but you can certainly play with a features (generators, higher order functions are some examples)
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Change text color of one word in a TextView
...
USE:
makeTextBold("Your order is accepted","accepted", textView);
makeTextBold("Your order is canceled","canceled", textView);
Function:
public static void makeTextBold(String sentence, String word, AppCompatTextView textView) {
SpannableStri...
Calling constructor from other constructor in same class
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The order of constructor evaluation must also be taken into consideration when chaining constructors:
To borrow from Gishu's answer, a bit (to keep code somewhat similar):
public Test(bool a, int b, string c)
: this(a, b)
{...
Do unix timestamps change across timezones?
...om any UNIX timestamp you have to do the math UNIX + offset + dstOffset in order to get the New York timestamp.
– Max
Mar 30 '19 at 20:15
1
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Should one use < or
... @Lie, this only applies if you need to process the items in forward order. With most operations in these kind of loops you can apply them to the items in the loop in any order you like. For example if you are searching for a value it does not matter if you start at the end of the list and wor...
How to search by key=>value in a multidimensional array in PHP
...th a suitable algorithm.
Linear algorithms in this case perform at O(n) (order total number of elements in entire array), this is poor, a million entries (eg a 1000x100x10 array) would take on average 500,000 iterations to find the needle. Also what would happen if you decided to change the struct...
How to change language settings in R
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@0range did you try cd \ and dir Rconsole /s in order to look for multiple files?
– Alessandro Jacopson
Apr 1 at 6:50
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redis-py : What's the difference between StrictRedis() and Redis()?
... to provide backwards compatibility with older versions of redis-py:
LREM: Order of 'num' and 'value' arguments reversed such that 'num' can provide a default value of zero.
ZADD: Redis specifies the 'score' argument before 'value'. These were swapped accidentally when being implemented and not disc...