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What are the advantages of NumPy over regular Python lists?
... lists -- a list of lists as you describe, in Python, would take at least 20 MB or so, while a NumPy 3D array with single-precision floats in the cells would fit in 4 MB. Access in reading and writing items is also faster with NumPy.
Maybe you don't care that much for just a million cells, but you ...
getting date format m-d-Y H:i:s.u from milliseconds
... Microseconds (added in PHP 5.2.2). Note that date() will always generate 000000 since it takes an integer parameter, whereas DateTime::format() does support microseconds if DateTime was created with microseconds.
So use as simple:
$micro_date = microtime();
$date_array = explode(" ",$micro_date...
Detect when an HTML5 video finishes
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edited Jul 15 '15 at 20:05
Mark Amery
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Why can't I initialize non-const static member or static array in class?
...reason a is allowed to be initialized while others are not.
Reference:
C++03 9.4.2 Static data members
§4
If a static data member is of const integral or const enumeration type, its declaration in the class definition can specify a constant-initializer which shall be an integral constant expre...
What is the usefulness of PUT and DELETE HTTP request methods?
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answered Aug 27 '12 at 13:20
GordonGordon
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Difference between rake db:migrate db:reset and db:schema:load
...atabases.rake (for Rails 3.2.x) and https://github.com/rails/rails/blob/v4.0.5/activerecord/lib/active_record/railties/databases.rake (for Rails 4.0.x)
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Can I 'git commit' a file and ignore its content changes?
...pull, it will say:
$ git pull
…
From https://github.com/x/y
72a914a..106a261 master -> origin/master
Updating 72a914a..106a261
error: Your local changes to the following files would be overwritten by merge:
filename.ext
and will refuse to merge.
At that point, you can...
nginx upload client_max_body_size issue
...TTP client supports it, the best way to handle this is to send an Expect: 100-Continue header. Nginx supports this correctly as of 1.2.7, and will reply with a 413 Request Entity Too Large response rather than 100 Continue if Content-Length exceeds the maximum body size.
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Validation failed for one or more entities while saving changes to SQL Server Database using Entity
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You can extract all the information from the DbEntityValidationException with the following code...
Different ways of adding to Dictionary
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The performance is almost a 100% identical. You can check this out by opening the class in Reflector.net
This is the This indexer:
public TValue this[TKey key]
{
get
{
int index = this.FindEntry(key);
if (index >= 0)
...