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How to query as GROUP BY in django?
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An easy solution, but not the proper way is to use raw SQL:
results = Members.objects.raw('SELECT * FROM myapp_members GROUP BY designation')
Another solution is to use the group_by property:
query = Members.objects.all().query
query.group_by = ['designation']
results = Q...
Simplest two-way encryption using PHP
...g $message - plaintext message
* @param string $key - encryption key (raw binary expected)
* @param boolean $encode - set to TRUE to return a base64-encoded
* @return string (raw binary)
*/
public static function encrypt($message, $key, $encode = false)
{
$nonceS...
How to read keyboard-input?
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try
raw_input('Enter your input:') # If you use Python 2
input('Enter your input:') # If you use Python 3
and if you want to have a numeric value
just convert it:
try:
mode=int(raw_input('Input:'))
except ValueErro...
How to replace a hash key with another key
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What are advantages of Artificial Neural Networks over Support Vector Machines? [closed]
...ence of sequences with
lim sup { |f(x) - U(x,a(k) ) | : x } =0
and you draw examples and tests (x,y) with a distribution D on IxI.
For a prescribed support, what you do is to find the best a such that
sum { ( y(l) - U(x(l),a) )^{2} | : 1<=l<=N } is minimal
Let this a=aa which is a rand...
Error: request entity too large
...size: '+limit); in node_modules/express/node_modules/connect/node_modules/raw-body/index.js:10 and saw another line in the console when calling the route with a big request (before the error output) :
Limit file size: 1048576
This means that somehow, somewhere, connect resets the limit paramete...
How to use ? : if statements with Razor and inline code blocks
...pectively generate the source &amp;nbsp;. Now there is a function Html.Raw("&nbsp;") which is supposed to let you write source code, except in this constellation it throws a compiler error:
Compiler Error Message: CS0173: Type of conditional expression cannot
be determined because ther...
How to write a test which expects an Error to be thrown in Jasmine?
...Try using an anonymous function instead:
expect( function(){ parser.parse(raw); } ).toThrow(new Error("Parsing is not possible"));
you should be passing a function into the expect(...) call. Your incorrect code:
// incorrect:
expect(parser.parse(raw)).toThrow(new Error("Parsing is not possible")...
How to read a single char from the console in Java (as the user types it)?
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What you want to do is put the console into "raw" mode (line editing bypassed and no enter key required) as opposed to "cooked" mode (line editing with enter key required.) On UNIX systems, the 'stty' command can change modes.
Now, with respect to Java... see Non bloc...
How to get key names from JSON using jq
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In combination with the above answer, you want to ask jq for raw output, so your last filter should be eg.:
cat input.json | jq -r 'keys'
From jq help:
-r output raw strings, not JSON texts;
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