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In Scala how do I remove duplicates from a list?
...e part of the file name of interest. Once the map is constructed, you can call the values method to get an Iterable of values--the keys will all be distinct by construction.
– Kipton Barros
Dec 19 '12 at 19:47
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Replace input type=file by an image
...
This works really well for me:
.image-upload>input {
display: none;
}
<div class="image-upload">
<label for="file-input">
<img src="https://icon-library.net/images/upload-photo-icon/upload-photo-icon-21...
Eclipse HotKey: how to switch between tabs?
...hem an OS specific shortcut.
Regarding shortcuts on Mac OS (OSX), Matt Ball complained in Sept. 2011 to not being able to remap CTRL+Page Up/CTRL+Page Down:
It drives me nuts to not be able to flip through open tabs as I can in pretty much every other tabbed program in OS X (⌘-Left and ⌘-...
Change Oracle port from port 8080
... Production on Tue Aug 26 10:40:44 2008
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> connect
Enter user-name: system
Enter password: <enter password if will not be visible>
Connected.
SQL> Exec DBMS_XDB.SETHTTPPORT(3010); [Assuming you want to have HTTP going to this po...
Vagrant stuck connection timeout retrying
...
I really didn't understand what this does, but it worked. So thank you.
– Lavixu
Aug 16 '14 at 4:05
1
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Postgresql GROUP_CONCAT equivalent?
...dited Sep 14 '17 at 20:37
Ariel Allon
71211 gold badge99 silver badges1515 bronze badges
answered Apr 1 '10 at 14:55
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Regular vs Context Free Grammars
...ammar is either right or left linear, whereas context free grammar is basically any combination of terminals and non-terminals. Hence you can see that regular grammar is a subset of context-free grammar.
So for a palindrome for instance, is of the form,
S->ABA
A->something
B->something
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What's the difference between size_t and int in C++?
...ndly Wikipedia:
The stdlib.h and stddef.h header files define a datatype called size_t which is used to represent the size of an object. Library functions that take sizes expect them to be of type size_t, and the sizeof operator evaluates to size_t.
The actual type of size_t is platform-dependent; ...
Convert a timedelta to days, hours and minutes
...l indeed have to perform "nauseatingly simple mathematics", e.g.:
def days_hours_minutes(td):
return td.days, td.seconds//3600, (td.seconds//60)%60
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How to use mongoimport to import csv
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Is it possible to import all the records from the csv into just 1 object instead of 1 object per record?
– Aniket Kapse
Aug 22 '16 at 12:34
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