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Difference between “@id/” and “@+id/” in Android
...en referencing android: symbols, because those are already defined for you by the platform and you can't make your own in that namespace anyway.
This namespace is the namespace of the framework.
for example, you need to use @android:id/list because this the id the framework expects to find.. (the f...
MySQL COUNT DISTINCT
...ite
From cp_visits
Where ts >= DATE_SUB(NOW(), INTERVAL 1 DAY)
Group By site_id
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How to specify id when uses include in layout xml file
...layout="@layout/test" android:id="@+id/test1" />
Then use two findViewById to access fields in the layout
View test1View = findViewById(R.id.test1);
TextView test1TextView = (TextView) test1View.findViewById(R.id.text);
Using that approach, you can access any field in any include you have.
...
Django ManyToMany filter()
... User.objects.filter(zones__in=[<id1>])
# filtering on a few zones, by id
users_in_zones = User.objects.filter(zones__in=[<id1>, <id2>, <id3>])
# and by zone object (object gets converted to pk under the covers)
users_in_zones = User.objects.filter(zones__in=[zone1, zone2, z...
Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...hat "almost certainly" means.
Long Answer
The BSON Object ID's generated by Mongo DB drivers are highly likely to be unique across collections. This is mainly because of the last 3 bytes of the ID, which for most drivers is generated via a static incrementing counter. That counter is collection-in...
How to sort an array of objects by multiple fields?
...ngs during the comparison. I have not done any profiling though.
var sort_by;
(function() {
// utility functions
var default_cmp = function(a, b) {
if (a == b) return 0;
return a < b ? -1 : 1;
},
getCmpFunc = function(primer, reverse) {
...
Split a List into smaller lists of N size
...ays that .Count is an O(1) operation, so I doubt you'd see any improvement by storing it in a variable: docs.microsoft.com/en-us/dotnet/api/…
– user1666620
Sep 15 at 13:54
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How to continue a Docker container which has exited
...created. -q merely suppresses other info (bedsides the id) usually output by `docker ps`. ---- note: Backtick is not a quotation sign, it has a very special meaning. Everything you type between backticks is evaluated (executed) by the shell before the main command - unix.stackexchange.com/que...
How to get last inserted row ID from WordPress database?
...cause a problem if two records were inserted at almost the exact same time by two different processes? Both processes could insert at the same time (or close enough to the same time) so that the auto_increment would return the same number for both processes.
– Michael Khalili
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Select last N rows from MySQL
... named id which is primary key . Goal is that the rows should be sorted by id in ASC order, that’s why this query isn’t working
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