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How to programmatically set the layout_align_parent_right attribute of a Button in Relative Layout?
...lativeLayout.ALIGN_PARENT_RIGHT);
params.addRule(RelativeLayout.LEFT_OF, R.id.id_to_be_left_of);
button.setLayoutParams(params); //causes layout update
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How do I delete a fixed number of rows with sorting in PostgreSQL?
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You could try using the ctid:
DELETE FROM logtable
WHERE ctid IN (
SELECT ctid
FROM logtable
ORDER BY timestamp
LIMIT 10
)
The ctid is:
The physical location of the row version within its table. Note that although the ctid can b...
Android: How to bind spinner to custom object list?
...hich contains some names (the names are visible) and each name has its own ID (the IDs are not equal to display sequence). When the user selects the name from the list the variable currentID has to be changed.
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When to use setAttribute vs .attribute= in JavaScript?
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From Javascript: The Definitive Guide, it clarifies things. It notes that HTMLElement objects of a HTML doc define JS properties that correspond to all standard HTML attributes.
So you only need to use setAttribute for non-standard attributes.
Example:
nod...
Get spinner selected items text?
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Spinner spinner = (Spinner)findViewById(R.id.spinner);
String text = spinner.getSelectedItem().toString();
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Can someone explain collection_select to me in clear, simple terms?
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collection_select(
:post, # field namespace
:author_id, # field name
# result of these two params will be: <select name="post[author_id]">...
# then you should specify some collection or array of rows.
# It can be Author.where(..).order(..) or something like...
PostgreSQL Autoincrement
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Yes, SERIAL is the equivalent function.
CREATE TABLE foo (
id SERIAL,
bar varchar);
INSERT INTO foo (bar) values ('blah');
INSERT INTO foo (bar) values ('blah');
SELECT * FROM foo;
1,blah
2,blah
SERIAL is just a create table time macro around sequences. You can not alter SERIAL...
How to get a Docker container's IP address from the host
...{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_name_or_id
Old Docker client syntax is:
docker inspect --format '{{ .NetworkSettings.IPAddress }}' container_name_or_id
These commands will return the Docker container's IP address.
As mentioned in the comments: if you are on W...
Find object in list that has attribute equal to some value (that meets any condition)
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@agf Wow I literally had no idea that existed.. book.pythontips.com/en/latest/for_-_else.html cool!
– ThatTechGuy
Feb 4 '18 at 18:50
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Best way to test if a row exists in a MySQL table
... field, a non unique field.
I have made some tests with a TEXT field. Considering the fact that we have a table with 1M entries. 37 entries are equal to 'something':
SELECT * FROM test WHERE texte LIKE '%something%' LIMIT 1 with
mysql_num_rows() : 0.039061069488525s. (FASTER)
SELECT count(*) as ...