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NodeJS: Saving a base64-encoded image to disk
My Express app is receiving a base64-encoded PNG from the browser (generated from canvas with toDataURL() ) and writing it to a file. But the file isn't a valid image file, and the "file" utility simply identifies it as "data".
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Why is the C++ STL is so heavily based on templates? (and not on *interfaces*)
I mean, aside from its obligating name (the Standard Template Library)...
13 Answers
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Why CancellationToken is separate from CancellationTokenSource?
...e accepted answer got the rationale exactly right. Here's the confirmation from the team who designed this feature (emphasis mine):
Two new types form the basis of the framework: A CancellationToken is
a struct that represents a ‘potential request for cancellation’. This
struct is passed...
How do I get whole and fractional parts from double in JSP/Java?
How do I get whole and fractional parts from double in JSP/Java ? If the value is 3.25 then I want to get fractional =.25 , whole = 3
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commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated
...tter method!) should fix it. See also How and when should I load the model from database for h:dataTable.
If UICommand or UIInput components are included by a dynamic source such as <ui:include src="#{bean.include}">, then you need to ensure that exactly the same #{bean.include} value is pres...
Lost my schema.rb! Can it be regenerated?
...them is db:schema:dump which will recreate the schema.rb for the Rails app from the database.
bundle exec rake db:schema:dump
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What is std::promise?
...td::future is an asynchronous return object ("an object that reads results from a shared state") and a std::promise is an asynchronous provider ("an object that provides a result to a shared state") i.e. a promise is the thing that you set a result on, so that you can get it from the associated futu...
Proper way to handle multiple forms on one page in Django
...ctions to deal with the two different forms.
Read the submit button values from the POST data. You can tell which submit button was clicked: How can I build multiple submit buttons django form?
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Static files in Flask - robot.txt, sitemap.xml (mod_wsgi)
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The best way is to set static_url_path to root url
from flask import Flask
app = Flask(__name__, static_folder='static', static_url_path='')
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Installing Google Protocol Buffers on mac
...sion 2.5.0 has been installed. Is it possible to install the older version from terminal.
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