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How do I use cascade delete with SQL Server?
I have 2 tables: T1 and T2, they are existing tables with data. We have a one to many relationship between T1 and T2. How do I alter the table definitions to perform cascading delete in SQL Server when a record from T1 is deleted, all associated records in T2 also deleted.
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Check if an array contains any element of another array in JavaScript
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Vanilla JS
ES2016:
const found = arr1.some(r=> arr2.includes(r))
ES6:
const found = arr1.some(r=> arr2.indexOf(r) >= 0)
How it works
some(..) checks each element of the array against a test function and returns true if any e...
Testing Abstract Classes
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241
Unit testing of abstract classes doesn't necessary mean testing the interface, as abstract class...
How do I create an HTML table with a fixed/frozen left column and a scrollable body?
...table {
border-collapse: separate;
border-spacing: 0;
border-top: 1px solid grey;
}
td, th {
margin: 0;
border: 1px solid grey;
white-space: nowrap;
border-top-width: 0px;
}
div {
width: 500px;
overflow-x: scroll;
margin-left: 5em;
overflow-y: visible;
pad...
Iterate over each line in a string in PHP
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192
preg_split the variable containing the text, and iterate over the returned array:
foreach(pre...
what's the difference between “hadoop fs” shell commands and “hdfs dfs” shell commands?
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140
Following are the three commands which appears same but have minute differences
hadoop fs {a...
How to check if a variable is a dictionary in Python?
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edited Nov 18 '19 at 15:35
Neuron
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Xcode variables
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148
The best source is probably Apple's official documentation. The specific variable you are look...
What does “Protocol … can only be used as a generic constraint because it has Self or associated typ
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answered Jul 25 '14 at 18:34
newacctnewacct
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jQuery Validate - require at least one field in a group to be filled
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21
That's an excellent solution Nathan. Thanks a lot.
Here's a way making the above code work, in ...