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Make column not nullable in a Laravel migration
...e doctrine/dbal
Then create a migration that will alter the table like so:
php artisan make:migration fix_whatever_table_name_here
public function up()
{
Schema::table('table_name', function (Blueprint $table) {
$table->type('column')->nullable(false)->change();
});
}
# pub...
LaTeX Optional Arguments
...mmand that scans ahead to detect what characters are coming up next in the token stream and then inserts the relevant macros to process the argument(s) coming up as appropriate. This can be quite tedious (although not difficult) using generic TeX programming. LaTeX's \@ifnextchar is quite useful for...
How to configure Visual Studio to use Beyond Compare
...ctually be using BComp.exe -- see scootersoftware.com/vbulletin/showthread.php?t=3461
– Joe
Jul 13 '11 at 15:28
6
...
List passed by ref - help me explain this behaviour
...
There are two parts of memory allocated for an object of reference type. One in stack and one in heap. The part in stack (aka a pointer) contains reference to the part in heap - where the actual values are stored.
When ref keyword is not use, just a copy ...
How can I multiply all items in a list together with Python?
...2) For small lists this will be significantly slower, since NumPy needs to allocate an array (relevant if repeated often)
– Disenchanted
Nov 28 '17 at 10:09
...
C++ template constructor
...
create() does not have to do dynamic allocation. Just return Foo(...); Thanks @Samuel_xL. This turned out to be a great idea for me.
– NoahR
Feb 26 '13 at 5:08
...
How do I concatenate two lists in Python?
...ise fashion, which means this is a
quadratic operation as memory has to be allocated for each step. DO
NOT USE if your lists are large.
See chain
and
chain.from_iterable
from the docs. You will need to import itertools first.
Concatenation is linear in memory, so this is the best in terms of
perfor...
JavaScript hide/show element
...isibility:hidden unlike display:none, the tag is not visible, but space is allocated for it on the page. The tag is rendered, it just isn't seen on the page.
See this link to see the differences.
share
|
...
Format number to 2 decimal places
...://www.w3resource.com/mysql/mathematical-functions/mysql-truncate-function.php
With rounding:
ROUND(0.166, 2)
-- will be evaluated to 0.17
ROUND(0.164, 2)
-- will be evaluated to 0.16
docs: http://www.w3resource.com/mysql/mathematical-functions/mysql-round-function.php
...
Which comment style should I use in batch files?
..., also a multiline caret at the line end, if it's not the end of the first token.
REM This is a comment, the caret is ignored^
echo This line is printed
REM This_is_a_comment_the_caret_appends_the_next_line^
echo This line is part of the remark
REM followed by some characters .:\/= works a bit...