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Is JavaScript a pass-by-reference or pass-by-value language?
...ause a is a memory location passed by value that references a string (char array). Passing structs (similar to js objects) by value in C is allowed, but not recommended. JavaScript simply enforces these best practices and hides the unnecessary and usually undesired cruft... and it sure makes for ...
How to copy from CSV file to PostgreSQL table with headers in CSV file?
...s the column names
for col in execute format ('select unnest(string_to_array(trim(temp_table::text, ''()''), '','')) from temp_table where col_1 = %L', col_first)
loop
execute format ('alter table temp_table rename column col_%s to %s', iter, col);
iter := iter + 1;
end l...
HTML table with 100% width, with vertical scroll inside tbody [duplicate]
...tbody tr:first').children(),
colWidth;
// Get the tbody columns width array
colWidth = $bodyCells.map(function() {
return $(this).width();
}).get();
// Set the width of thead columns
$table.find('thead tr').children().each(function(i, v) {
$(v).width(colWidth[i]);
});
And here is...
Portable way to get file size (in bytes) in shell?
...
Finally I decided to use ls, and bash array expansion:
TEMP=( $( ls -ln FILE ) )
SIZE=${TEMP[4]}
it's not really nice, but at least it does only 1 fork+execve, and it doesn't rely on secondary programming language (perl/ruby/python/whatever)
...
Add params to given URL in Python
..., you can drop them.
How it works
Test 1: Adding new arguments, handling Arrays and Bool values:
url = 'http://stackoverflow.com/test'
new_params = {'answers': False, 'data': ['some','values']}
add_url_params(url, new_params) == \
'http://stackoverflow.com/test?data=some&data=values&...
How to check if a string is a valid date
...o something like this, for handling bad formatted date : Date.valid_date? *Array.new(3).zip(date_string.split('-')).transpose.last.reverse.map(&:to_i)
– vincentp
Jun 1 '15 at 8:25
...
Preview an image before it is uploaded
...ot sure if I did. But you might be able to do something with Blob or Typed Array. See: stackoverflow.com/questions/9267899/…
– tfmontague
11 hours ago
add a comment
...
How to change the CHARACTER SET (and COLLATION) throughout a database?
... separately.
I simply used a Perl script to return all these alters as an array and iterated over them, fixed the columns that were too long (generally they were varchar(256) when the data generally only had 20 characters in them so that was an easy fix).
I found some data was corrupted when alter...
Can one do a for each loop in java in reverse order?
...
This approach may be fine for array based lists (such as ArrayList) but it would be sub-optimal for Linked Lists as each get would have to traverse the list from beginning to end (or possibly end to beginning) for each get. It is better to use a smarter i...
Difference between Python's Generators and Iterators
...uples, lists, dictionaries, sets, frozen sets, strings, byte strings, byte arrays, ranges and memoryviews:
>>> all(isinstance(element, collections.Iterable) for element in (
(), [], {}, set(), frozenset(), '', b'', bytearray(), range(0), memoryview(b'')))
True
Iterators require a...