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Can I have multiple primary keys in a single table?
... username OR a userid, without needing both. I guess RB's answer of unique indexes would do the trick there.
– Burrito
Dec 18 '17 at 16:30
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What's the difference between “git reset” and “git checkout”?
...
git reset is specifically about updating the index, moving the HEAD.
git checkout is about updating the working tree (to the index or the specified tree). It will update the HEAD only if you checkout a branch (if not, you end up with a detached HEAD).
(actually, with Gi...
ElasticSearch: Unassigned Shards, how to fix?
...n.
# v0.90.x and earlier
curl -XPUT 'localhost:9200/_settings' -d '{
"index.routing.allocation.disable_allocation": false
}'
# v1.0+
curl -XPUT 'localhost:9200/_cluster/settings' -d '{
"transient" : {
"cluster.routing.allocation.enable" : "all"
}
}'
Elasticsearch will then re...
Best way to handle list.index(might-not-exist) in python?
...except clause. This is the pythonic way. ValueError will be raised by the .index method only, because it's the only code you have there!
To answer the comment:
In Python, easier to ask forgiveness than to get permission philosophy is well established, and no index will not raise this type of error ...
Echo equivalent in PowerShell for script testing
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PowerShell interpolates, does it not?
In PHP
echo "filesizecounter: " . $filesizecounter
can also be written as:
echo "filesizecounter: $filesizecounter"
In PowerShell something like this should suit your needs:
Write-Host "filesizecounter: $filesizecounter...
Java String array: is there a size of method?
I come from a php background and in php, there is an array_size() function which tells you how many elements in the array are used.
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Difference between MEAN.js and MEAN.io
...t.
From the website it looks like that their core skill set is Drupal (a PHP content management system) and only lately they started using Node.js and AngularJS.
Lately I was reading the Mean.js Blog and things became clearer. My understanding is that the main Javascript developer (Amos Haviv) le...
How to get a index value from foreach loop in jstl
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use varStatus to get the index c:forEach varStatus properties
<c:forEach var="categoryName" items="${categoriesList}" varStatus="loop">
<li><a onclick="getCategoryIndex(${loop.index})" href="#">${categoryName}</a></l...
What are the best practices for using a GUID as a primary key, specifically regarding performance?
...ario.
the clustering key (the column or columns that define the "clustered index" on the table) - this is a physical storage-related thing, and here, a small, stable, ever-increasing data type is your best pick - INT or BIGINT as your default option.
By default, the primary key on a SQL Server ta...
How can I use the $index inside a ng-repeat to enable a class and show a DIV?
...sue here is that ng-repeat creates its own scope, so when you do selected=$index it creates a new a selected property in that scope rather than altering the existing one. To fix this you have two options:
Change the selected property to a non-primitive (ie object or array, which makes javascript lo...