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String concatenation: concat() vs “+” operator
...then throwing it away when you create the final String. In practice memory allocation is surprisingly fast.
Update: As Pawel Adamski notes, performance has changed in more recent HotSpot. javac still produces exactly the same code, but the bytecode compiler cheats. Simple testing entirely fails bec...
Can't install nuget package because of “Failed to initialize the PowerShell host”
All of a sudden, I am getting this error when upgrading Nuget packages. None of the fixes that I have come across work. I am using Visual Studio 2013.
...
What are the “must have” jQuery plugins? [closed]
...hat have not already been described in other posts, I'll try and roll them all into a summarizing post.
– Dónal
Nov 6 '08 at 5:12
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How do I use IValidatableObject?
... Prop1 = 1,
Prop2 = 2
};
bool validateAllProperties = false;
var results = new List<ValidationResult>();
bool isValid = Validator.TryValidateObject(
toValidate,
new ValidationContext(toValidate, null, null),
...
New line in text area
...&#13; Carriage Return are HTML entitieswikipedia. This way you are actually parsing the new line ("\n") rather than displaying it as text.
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What are good message queue options for nodejs? [closed]
Looking to use a message queue in a small web app I'm building with node.js. I looked at resque but not sure that's appropriate. The goal is to push notifications to clients based on backend and other client actions with socketio. I could do this with just socketio but I thought maybe a proper messa...
How do you calculate the average of a set of circular data? [closed]
... sum_i_from_1_to_N cos(a[i])
The method given by starblue is computationally equivalent, but his reasons are clearer and probably programmatically more efficient, and also work well in the zero case, so kudos to him.
The subject is now explored in more detail on Wikipedia, and with other uses, l...
Proper way to return JSON using node or Express
...n do this by changing the options instead.
'json replacer' JSON replacer callback, null by default
'json spaces' JSON response spaces for formatting, defaults to 2 in development, 0 in production
Not actually recommended to set to 40
app.set('json spaces', 40);
Then you could just respond with so...
Read .mat files in Python
...
There is a nice package called mat4py which can easily be installed using
pip install mat4py
It is straightforward to use (from the website):
Load data from a MAT-file
The function loadmat loads all variables stored in the MAT-file into a simple...
Why is __dirname not defined in node REPL?
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Yeah, that should really be added to the answer Eye, because that's what got me.
– Tomáš Zato - Reinstate Monica
Oct 12 '15 at 17:14
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