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Responsive web design is working on desktop but not on mobile device
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make sure the production index.html actually includes the tag as well as development index.html
– halafi
Mar 4 '18 at 9:56
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Strange behavior for Map, parseInt [duplicate]
...alue = parseInt(string[, radix]);
while map handler's second argument is index:
... callback is invoked with three arguments: the value of the element,
the index of the element, and the Array object being traversed.
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Worth switching to zsh for casual use? [closed]
... grab the bash-completion-20060301.tar.gz from http://www.caliban.org/bash/index.shtml#completion and extract it with
tar -xzvf bash-completion-20060301.tar.gz
then copy the bash_completion/bash_completion file to /etc with
sudo cp bash_completion/bash_completion /etc
which will prompt you f...
Does MySQL ignore null values on unique constraints?
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note: this also works also unique indexes that have more columns. So if you want columns a, b and c to be unique you can still have in the table double rows with null, b, c
– Mihai Crăiță
Oct 13 '19 at 8:39
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Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
...he first dimension [10] is ignored; the compiler will not prevent you from indexing off the end (notice that the formal wants 10 elements, but the actual provides only 2). However, the size of the second dimension [20] is used to determine the stride of each row, and here, the formal must match the...
Convert timestamp to date in MySQL query
... up as 2018-Nov-6. You may be looking for '%Y-%m-%d' as you'd format it in PHP (date('Y-m-d',$row->user_created_at)) - this (both variants, SQL and PHP) shows up as 2018-11-06
– Chris S.
Nov 7 '18 at 9:19
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How to estimate how much memory a Pandas' DataFrame will need?
...6600
Calendar_Year 20906600
Model_Year 20906600
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To include indexes, pass index=True.
So to get overall memory consumption:
>>> df.memory_usage(index=True).sum()
731731000
Also, passing deep=True will enable a more accurate memory usage report, that accounts for the full usa...
How to delete a certain row from mysql table with same column values?
... table. But if there is not.
I will give other ways:
By creating Unique index
I see id_users and id_product should be unique in your example.
ALTER IGNORE TABLE orders ADD UNIQUE INDEX unique_columns_index (id_users, id_product)
These will delete duplicate rows with same data.
But if you st...
What characters can be used for up/down triangle (arrow without stem) for display in HTML?
... REVERSED ROTATED FLORAL HEART BULLET
U+261A ☚ BLACK LEFT-POINTING INDEX
U+261B ☛ BLACK RIGHT-POINTING INDEX
U+261C ☜ WHITE LEFT POINTING INDEX
U+261D ☝ WHITE UP POINTING INDEX
U+261E ☞ WHITE RIGHT POINTING INDEX
U+261F ☟ WHITE DOWN POINTING INDEX
U+2620 ☠ SKULL ...
Explanation of JSONB introduced by PostgreSQL
...son.
If you do a lot of operations on the JSON value in PostgreSQL, or use indexing on some JSON field, you should use jsonb.
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