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Node.js get file extension
...rue }
}
You can use this header and do the extension mapping (substring etc ...) manually, but there are also ready made libraries for this. Below two were the top results when i did a google search
mime
mime-types
and their usage is simple as well:
app.post('/upload2', function (req, res) ...
What is the volatile keyword useful for?
...A is creating Singleton instance and just after creation, the CPU corrupts etc, all other threads will not be able to see the value of _instance as not null and they will believe it is still assigned null.
Why does this happen? Because reader threads are not doing any locking and until the writer...
Razor-based view doesn't see referenced assemblies
...quishIt.Framework" />
<add namespace="Your.Namespace.Etc" />
</namespaces>
</pages>
</system.web.webPages.razor>
</configuration>
Alternatively, you can add using statements to your shared layout:
@using Your.Namespace.Etc;
...
How do you serialize a model instance in Django?
...better way, I'm all ears. This shouldn't have much practical downside as fetching and de/re encoding a single object shouldn't be that resource-intensive. Make it into a helper function or extend/mix-in with your objects as a new method if you want to hide the horror.
– Julia...
Add params to given URL in Python
... have arbitrary data (for example, characters such as ampersands, slashes, etc. will need to be encoded).
Check out urllib.urlencode:
>>> import urllib
>>> urllib.urlencode({'lang':'en','tag':'python'})
'lang=en&tag=python'
In python3:
from urllib import parse
parse.urlenc...
Get name of object or class
... = new App(); // usage
obj.a.b.c(); // App
// usage with react props etc,
// For instance, we want to pass this callback to some component
const myComponent = {};
myComponent.customProps = obj.a.b.c;
myComponent.customProps(); // App
...
Tree data structure in C#
...siness logic that must be implemented (child limits, sorting the children, etc.)
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How efficient is locking an unlocked mutex? What is the cost of a mutex?
...
This depends on what you actually call "mutex", OS mode and etc.
At minimum it's a cost of an interlocked memory operation. It's a relatively heavy operation (compared to other primitive assembler commands).
However, that can be very much higher. If what you call "mutex" a kernel ob...
What is the difference between log4net and ELMAH?
...exceptions via many different mechanisms (SQL, RSS, Twitter, files, email, etc.). If you have no built-in exception handling ELMAH will most likely get you what you are looking for in terms of exception handling in a web application environment.
Log4net can be used for exception logging as well, ho...
Are booleans as method arguments unacceptable? [closed]
...deline i.e. enums are often more readable in code than generic bools, ints etc but there will always be exceptions to the rule.
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