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What is the __del__ method, How to call it?
... behaviour similar to the with open() as f: pass syntax used for accessing files. __enter__ is automatically called when entering the scope of with, while __exit__ is automatically called when exiting it. See this question for more details.
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Check folder size in Bash
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Update:
You should know that du shows the used disk space; and not the file size.
You can use --apparent-size if u want to see sum of actual file sizes.
--apparent-size
print apparent sizes, rather than disk usage; although the apparent size is usually smaller, it may be larger due...
How to add a progress bar to a shell script?
... The question was "How do I do progress bars" with an example of copying files. I focused on the "graphics" problem, not the calculation of how far along a file copy operation is.
– Mitch Haile
May 25 '14 at 5:00
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Python Requests throwing SSLError
...on is to set the verify parameter to a string that is the path of the .pem file of the certificate (which you should obtain by some sort of secure means).
So, as of version 2.0, the verify parameter accepts the following values, with their respective semantics:
True: causes the certificate to val...
What's the difference between Perl's backticks, system, and exec?
...rom a process's STDOUT (but not both at the same time).
#read from a gzip file as if it were a normal file
open my $read_fh, "-|", "gzip", "-d", $filename
or die "could not open $filename: $!";
#write to a gzip compressed file as if were a normal file
open my $write_fh, "|-", "gzip", $filename...
In MySQL queries, why use join instead of where?
... in the WHERE clause
SELECT *
FROM TABLE_A a,
TABLE_B b
WHERE a.id = b.id
Here's the query re-written using ANSI-92 JOIN syntax:
SELECT *
FROM TABLE_A a
JOIN TABLE_B b ON b.id = a.id
From a Performance Perspective:
Where supported (Oracle 9i+, PostgreSQL 7.2+, MySQL 3.23+, SQ...
How to preventDefault on anchor tags?
... rule:
a[ng-click]{
cursor: pointer;
}
Its much more simple and provides the exact same functionality and is much more efficient. Hope that might be helpful to anyone else looking up this solution in the future.
The following is my previous solution, which I am leaving here just for legac...
Entity Framework 4 - AddObject vs Attach
... is used to update (or delete) the appropriate row by finding its matching ID in the db table.
Furthermore, using the Attach method, you can define relationships between entities that already exist in the ObjectContext but that have not been connected automatically. Basically the main purpose of A...
jQuery & CSS - Remove/Add display:none
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To hide the div
$('.news').hide();
or
$('.news').css('display','none');
and to show the div:
$('.news').show();
or
$('.news').css('display','block');
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EF Code First “Invalid column name 'Discriminator'” but no inheritance
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in my case adding not mapped didn't helped. i have notmapped in all viewmodels
– Heemanshu Bhalla
Nov 21 '18 at 10:01
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