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Can we have functions inside functions in C++?
...+ nor in other languages that I’ve worked with – which don’t include Python and Ada, for the record). Furthermore, making that distinction is just not meaningful in C++ because C++ does not have local functions, period. It only has lambdas. If you want to limit the scope of a function-like thi...
Assign output to variable in Bash
...rl -s 'http://169.254.169.254/latest/dynamic/instance-identity/document' | python -c "import sys, json; print json.load(sys.stdin)['region']")
echo $INSTANCE_REGION
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How to export all data from table to an insertable sql format?
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Command to get the database backup from linux machine terminal.
sqlcmd -S localhost -U SA -Q "BACKUP DATABASE [demodb] TO DISK = N'/var/opt/mssql/data/demodb.bak' WITH NOFORMAT, NOINIT, NAME = 'demodb-full', SKIP, NOREWIND, NOUNLOAD, STATS = 10"
Hope it helps so...
Is there a REAL performance difference between INT and VARCHAR primary keys?
...nty of free space.
Ubuntu 16.04 64-bit
MySQL Ver 14.14 Distrib 5.7.20, for Linux (x86_64)
The tables:
create table jan_int (data1 varchar(255), data2 int(10), myindex tinyint(4)) ENGINE=InnoDB;
create table jan_int_index (data1 varchar(255), data2 int(10), myindex tinyint(4), INDEX (myindex)) ENG...
Are the shift operators () arithmetic or logical in C?
...e things (usually due to aggressive optimization - for example see the old Linux TUN/TAP driver null pointer bug: lwn.net/Articles/342330). Unless I need sign-fill on right shift (which I realize is implementation defined behavior), I usually try to perform my bit shifts using unsigned values, even ...
How to force a web browser NOT to cache images
...me on the server.
Generate time by Javascript with performance.now() or by Python with time.time()
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Matplotlib transparent line plots
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How do I convert a pandas Series or index to a Numpy array? [duplicate]
...you know how to get the index or column of a DataFrame as a NumPy array or python list?
8 Answers
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Read file data without saving it in Flask
... file
<html>
<head>
<title>Simple file upload using Python Flask</title>
</head>
<body>
{% if filestring %}
<h1>Raw image:</h1>
<h1>{{filestring}}</h1>
<img src="data:image/png;base64, {{filestring}}" alt="alte...
How to serve static files in Flask
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@DenisV it has nothing to do with Python per-se, it's Flask convention for defining URL parameters (see http://flask.pocoo.org/docs/0.12/api/#url-route-registrations). In a nutshell <path> is equivalent to <string:path>, and because you want Flask...