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List comprehension in Ruby
..._ARRAY.map{|x| x % 2 == 0 ? x * 3 : nil}.compact
end
end
def test_select_map
1000.times do
TEST_ARRAY.select{|x| x % 2 == 0 }.map{|x| x * 3}
end
end
def test_inject
1000.times do
TEST_ARRAY.inject([]) {|all, x| all << x*3 if x % 2 == 0; all }
end
end...
@import vs #import - iOS 7
... header files anyway.
So leaving the #import will be just the same as its converted to a module import where possible anyway
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DateTime.Now vs. DateTime.UtcNow
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As you can see here, comparisons and math functions don't automatically convert to compatible times. The Timespan should have been almost one hour, but instead was almost 6. "utc < now" should have been true (I even added an hour to be sure), but was still false.
You can also see the 'work ...
How to pretty print nested dictionaries?
...ainst it is that it don't produce a valid python string, but can almost be converted back in python.
– y.petremann
Oct 6 '14 at 4:49
1
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How to remove application from app listings on Android Developer Console
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Select Store Presense then Pricing Distribution and select Unpublish from App Availability.
Google's help for this is here: https://support.google.com/googleplay/android-developer/answer/113476#unpublish (as of Feb-2020)
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Get full path of the files in PowerShell
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Add | select FullName to the end of your line above. If you need to actually do something with that afterwards, you might have to pipe it into a foreach loop, like so:
get-childitem "C:\windows\System32" -recurse | where {$_.exte...
How to call Android contacts list?
...TION_PICK on the People.CONTENT_URI, then return to this Activity when the selection is made (or canceled).
startActivityForResult(intent, PICK_CONTACT);
3. Listening for the Result
Also in your Activity, override the onActivityResult method to listen for the return from the 'select a contact' A...
Deleting an element from an array in PHP
...t to reindex the keys you can use \array_values() after unset() which will convert all keys to numerical enumerated keys starting from 0.
Code
<?php
$array = [0 => "a", 1 => "b", 2 => "c"];
unset($array[1]);
//↑ Key which you want to delete
?>
Output
[
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Escape single quote character for use in an SQLite query
... Also, depending on the lifetime of the string, the first step might be to convert '' to ' before doubling them up again.
– Gary Z
Jul 11 '18 at 0:16
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What do linkers do?
I've always wondered. I know that compilers convert the code you write into binaries but what do linkers do? They've always been a mystery to me.
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