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How to create multiple levels of indentation in Javadoc?
...some beginner will not understand Your comment and use the above-mentioned form.
– Rauni Lillemets
Apr 24 '14 at 7:35
2
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Is there a PHP function that can escape regex patterns before they are applied?
...ase I could come up with where it's actually being used to programatically form a regex and put it into another preg_* function (because otherwise, what's the point?). Feel free to rollback if you don't like the change.
– Mark Amery
Sep 21 '15 at 23:04
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What is a non-capturing group in regular expressions?
...o.
Well, groups serve many purposes. They can help you to extract exact information from a bigger match (which can also be named), they let you rematch a previous matched group, and can be used for substitutions. Let's try some examples, shall we?
Imagine you have some kind of XML or HTML (be awar...
Null coalescing in powershell
...these aren't very snappy, and nowhere near as comfortable to use as the C# forms.
You might also consider wrapping it in a very simple function to make things more readable:
function Coalesce($a, $b) { if ($a -ne $null) { $a } else { $b } }
$s = Coalesce $myval "new value"
or possibly as, IfNul...
Datatables: Cannot read property 'mData' of undefined
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FYI dataTables requires a well formed table. It must contain <thead> and <tbody> tags, otherwise it throws this error. Also check to make sure all your rows including header row have the same number of columns.
The following will throw error (...
MySQL Creating tables with Foreign Keys giving errno: 150
...he same field you are attempting to create the new FK for, and they are malformed (i.e. different collation), they will need to be made consistent first. This may be a result of past changes where SET FOREIGN_KEY_CHECKS = 0; was utilized with an inconsistent relationship defined by mistake. See @an...
Using JSON.NET as the default JSON serializer in ASP.NET MVC 3 - is it possible?
...ntEncoding;
// If you need special handling, you can call another form of SerializeObject below
var serializedObject = JsonConvert.SerializeObject(Data, Formatting.Indented);
response.Write(serializedObject);
}
EDIT 2: I removed the check for Data being null as per the...
Do event handlers stop garbage collection from occurring?
... intention of unsubscribing from an event when done with it will need some form of reference to the publisher. It could be a WeakReference, and in some cases that might be a good idea, but as often as not it will be a strong one.
– supercat
Apr 13 '12 at 15:37...
What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...s the total number of cars.
Alternatively, one could get all wheels and perform the lookups in memory:
SELECT * FROM Wheel
This reduces the number of round-trips to the database from N+1 to 2.
Most ORM tools give you several ways to prevent N+1 selects.
Reference: Java Persistence with Hibernate, c...
How to select a node using XPath if sibling node has a specific value?
... This doesn't answer the question but it answers my actual question that I formulated badly. Thank you!
– User9213
Apr 10 '19 at 7:33
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