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How do I convert a numpy array to (and display) an image?
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The following should work:
from matplotlib import pyplot as plt
plt.imshow(data, interpolation='nearest')
plt.show()
If you are using Jupyter notebook/lab, use this inline command before importing matplotlib:
%matplotlib inline
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How do I make CMake output into a 'bin' dir?
...KE_ARCHIVE_OUTPUT_DIRECTORY, considering that the command install(TARGETS <target_name>) still complains about "given no RUNTIME DESTINATION for executable target"? This variable supposedly provides a default value, therefore the install command should not complain about the absence of a RUNTI...
Devise Secret Key was not set
...As of Devise 3.2.3 for Rails 4+ applications the key setting location defaults to YourAppName::Application.config.secret_key_base found in config/initializers/secret_token.rb
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Why unsigned integer is not available in PostgreSQL?
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CREATE DOMAIN name [ AS ] data_type
[ COLLATE collation ]
[ DEFAULT expression ]
[ constraint [ ... ] ]
where constraint is:
[ CONSTRAINT constraint_name ]
{ NOT NULL | NULL | CHECK (expression) }
Domain is like a type but with an additional constraint.
For an concrete example you ...
How to call a method after a delay in Android
...elpful in some situations. Simply store a reference to the ScheduledFuture<?> returned by worker.schedule() and call its cancel(boolean) method.
– Dennis
May 27 '14 at 12:14
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How can I know which parts in the code are never used?
... no exception will be thrown.
For the second kind, it's much more difficult. Statically it requires whole program analysis, and even though link time optimization may actually remove dead code, in practice the program has been so much transformed at the time it is performed that it is near impossi...
How to create border in UIButton?
...y accessing the layer property of the button.
First, add Quartz
#import <QuartzCore/QuartzCore.h>
Set properties:
myButton.layer.borderWidth = 2.0f;
myButton.layer.borderColor = [UIColor greenColor].CGColor;
See:
https://developer.apple.com/documentation/quartzcore/calayer#//apple_ref/...
Throw an error in a MySQL trigger
...in the table orders, but i'm fairly new to triggers and i'm finding difficulties in writing it!Thx.
– Nicola Peluchetti
Mar 12 '11 at 14:44
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Disable ActiveRecord for Rails 4
...ot just copy) you want to use, for example:
require "action_controller/railtie"
require "action_mailer/railtie"
require "sprockets/railtie"
require "rails/test_unit/railtie"
Remove config.active_record.raise_in_transactional_callbacks = true from config/application.rb
3. Delete your config/datab...
Duplicating a MySQL table, indices, and data
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This will not copy indexes and triggers as the SELECT result is an (unnamed) temporary table and does not "carry" the metadata of the source table. Consider if you'd be using functions, it would make no sense.
– chx
Apr 30 '15 at 6:29
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