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How do I count unique values inside a list
...s are thrown away, and list.count() is O(n) anyway. You don't even need to convert aa to list at all. See Vidul's answer instead.
– wjandrea
Sep 23 at 15:38
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Display lines number in Stack Trace for .NET assembly in Release mode
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Go into the Properties window for the project where you want to see stack trace line numbers.
Click on the Build "vertical tab".
Select "Release" configuration. Check the DEBUG constant parameter.
Uncheck the "Optimize code" par...
Python Pandas Error tokenizing data
...n for n in cerror.split(' ') if str.isdigit(n)]
expected.append(int(nums[0]))
saw.append(int(nums[2]))
line.append(int(nums[1])-1)
else:
cerror = 'Unknown'
print 'Unknown Error - 222'
if line != []:
# Handle the errors however...
Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
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[ForeignKey("StageId")]
public virtual Stage Stage { get; set; }
public int? StageId { get; set; }
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How can you represent inheritance in a database?
... to the base table. Example:
CREATE TABLE policies (
policy_id int,
date_issued datetime,
-- // other common attributes ...
);
CREATE TABLE policy_motor (
policy_id int,
vehicle_reg_no varchar(20),
-- // other attributes specific to motor insurance ....
Random number from a range in a Bash Script
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In this example, jot has unfair distribution for the interval's minimum and maximum (i.e., 2000 and 65000). In other words, the min and max will be generated less frequently. See my jot answer for details and a workaround.
– Clint Pachl
No...
Scala list concatenation, ::: vs ++
...ts, there's no difference, but in the case of 3 or more, you have a good point, and I confirmed it with a quick benchmark. However, if you're worried about efficiency, x ::: y ::: z should be replaced with List(x, y, z).flatten. pastebin.com/gkx7Hpad
– Luigi Plinge
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Resize image in PHP
...hope is will work for you.
/**
* Image re-size
* @param int $width
* @param int $height
*/
function ImageResize($width, $height, $img_name)
{
/* Get original file size */
list($w, $h) = getimagesize($_FILES['logo_im...
Python pandas: fill a dataframe row by row
...sign a dictionary
to each element of the row y probably not what you want; converting to a Series tells pandas
that you want to align the input (for example you then don't have to to specify all of the elements)
In [7]: df = pandas.DataFrame(columns=['a','b','c','d'], index=['x','y','z'])
In [8]: ...
Finding Number of Cores in Java
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int cores = Runtime.getRuntime().availableProcessors();
If cores is less than one, either your processor is about to die, or your JVM has a serious bug in it, or the universe is about to blow up.
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