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BestPractice - Transform first character of a string into lower case
...:
Char.ToLowerInvariant(name[0]) + name.Substring(1)
The first solution is not optimized because string.Format is slow and you don't need it if you have a format that will never change. It also generates an extra string to covert the letter to lowercase, which is not needed.
The approach with "+...
Concurrent HashSet in .NET Framework?
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Your implementation is correct. The .NET Framework does not provide a built-in concurrent hashset type, unfortunately. However, there are some workarounds.
ConcurrentDictionary (recommended)
This first one is to use the class ConcurrentDictio...
How to know if user is logged in with passport.js?
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If user is logged in, passport.js will create user object in req for every request in express.js, which you can check for existence in any middleware:
if (req.user) {
// logged in
} else {
// not logged in
}
You can create...
How to repair a serialized string which has been corrupted by an incorrect byte count length?
I am using Hotaru CMS with the Image Upload plugin, I get this error if I try to attach an image to a post, otherwise there is no error:
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Why doesn't height: 100% work to expand divs to the screen height?
...ork for height, the parent's height must be determined. The only exception is the root element <html>, which can be a percentage height. .
So, you've given all of your elements height, except for the <html>, so what you should do is add this:
html {
height: 100%;
}
And your code ...
How to change CSS using jQuery?
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Ignore the people that are suggesting that the property name is the issue. The jQuery API documentation explicitly states that either notation is acceptable: http://api.jquery.com/css/
The actual problem is that you are missing a closing curly brace on this line:
$("#myParagraph").c...
Does SQLAlchemy have an equivalent of Django's get_or_create?
I want to get an object from the database if it already exists (based on provided parameters) or create it if it does not.
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How to assign from a function which returns more than one value?
Still trying to get into the R logic... what is the "best" way to unpack (on LHS) the results from a function returning multiple values?
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Database Structure for Tree Data Structure
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You mention the most commonly implemented, which is Adjacency List:
https://blogs.msdn.microsoft.com/mvpawardprogram/2012/06/25/hierarchies-convert-adjacency-list-to-nested-sets
There are other models as well, including materialized path and nested sets:
http://communities...
Favorite Django Tips & Features?
..._DIRS = (
os.path.join(PROJECT_DIR, "templates"),
)
Credits: I got this tip from the screencast 'Django From the Ground Up'.
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edited Aug 25 '10 at 6:38
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