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json_encode/json_decode - returns stdClass instead of Array in PHP
...gs ([] = array).
JSON (as JavaScript) doesn't know associative arrays only indexed arrays. So when JSON encoding a PHP associative array, this will result in a JSON string containing this array as an "object".
Now we're decoding the JSON again using json_decode($arrayEncoded). The decode function do...
Regular expression that matches valid IPv6 addresses
...Pv6 addresses (section 2.2 of rfc5952)
link-local IPv6 addresses with zone index (section 11 of rfc4007)
IPv4-Embedded IPv6 Address (section 2 of rfc6052)
IPv4-mapped IPv6 addresses (section 2.1 of rfc2765)
IPv4-translated addresses (section 2.1 of rfc2765)
IPv6 Regular Expression:
(([0-9a-fA-F]...
How to run `rails generate scaffold` when the model already exists?
...roller.rb
invoke haml
create app/views/users
create app/views/users/index.html.haml
create app/views/users/edit.html.haml
create app/views/users/show.html.haml
create app/views/users/new.html.haml
create app/views/users/_form.html.haml
invoke test_unit
create test/controllers/...
Is there a better way to iterate over two lists, getting one element from each list for each iterati
...
what if additionally I want the index i? Can I wrap that zip in enumerate?
– Charlie Parker
Mar 6 '18 at 18:06
1
...
How do I ignore an error on 'git pull' about my local changes would be overwritten by merge?
...s that you already staged - e.g. with git add - then add the option --keep-index. Note however, that this will still prevent merging if those staged changes collide with the ones from upstream.
If you want to overwrite only specific parts of your local changes, there are two possibilities:
Comm...
Replacing blank values (white space) with NaN in pandas
...', 4],
[-1.176781, 'qux', ' '],
], columns='A B C'.split(), index=pd.date_range('2000-01-01','2000-01-06'))
# replace field that's entirely space (or empty) with NaN
print(df.replace(r'^\s*$', np.nan, regex=True))
Produces:
A B C
2000-01-01 -0.532681 foo ...
Are Stored Procedures more efficient, in general, than inline statements on modern RDBMS's? [duplica
...EN 1 AND
99999999, the DBMS may select a
full-table scan instead of an index
scan because you're grabbing every row
in the table (so sayeth the
statistics). If this is the cached
version, then you can get poor
performance when you later send
SELECT * FROM table WHERE id BETWEEN
1 A...
Array.push() if does not exist?
... It is better to extend Array prototype with JavaScript 1.6 method IndexOf instead of your inArray.
– Eugene Gluhotorenko
Jul 1 '13 at 8:16
7
...
What is the difference between an ordered and a sorted collection?
... concepts are similar.
List is an ordered collection: each element has an index, which forms an ordering of the elements, but not usually related to any property of the elements themselves.
SortedMap and SortedSet are sorted collections, which means that iteration through the collection will happe...
SQL error “ORA-01722: invalid number”
...
In my case the conversion error was in functional based index, that I had created for the table.
The data being inserted was OK. It took me a while to figure out that the actual error came from the buggy index.
Would be nice, if Oracle could have gave more precise error message...