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How do I modify fields inside the new PostgreSQL JSON datatype?
...l,{"b":[1]}]}', '{a,1,b}', jsonb '[2]')
-- will raise SQLSTATE 22023 (invalid_parameter_value): cannot replace existing key
Deleting a key (or an index) from a JSON object (or, from an array) can be done with the - operator:
SELECT jsonb '{"a":1,"b":2}' - 'a', -- will yield jsonb '{"b":2}'
j...
Android: How can I pass parameters to AsyncTask's onPreExecute()?
...
You can override the constructor. Something like:
private class MyAsyncTask extends AsyncTask<Void, Void, Void> {
public MyAsyncTask(boolean showLoading) {
super();
// do stuff
}
// doInBackground() et...
Is there a way to get the XPath in Google Chrome?
... Nice -- although I'm not sure this answers the original question. How did you find out about it? I'm wondering if there are other similar functions available in the console.
– huyz
Sep 3 '11 at 8:30
...
force Maven to copy dependencies into target/lib
...e:
<project>
...
<profiles>
<profile>
<id>qa</id>
<build>
<plugins>
<plugin>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
...
The entitlements specified…profile. (0xE8008016). Error iOS 4.2
...
By the way, check that you specify correct sign identity exactly in Target -> Build Settings, not in Project. Target overrides the Project. I've forgot about this and got 0xE8008016 error message.
– Tertium
Sep 26 '12 at 18:59
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Laravel Check If Related Model Exists
...fits-all method for all relations. Use query method instead as @tremby provided below:
$model->relation()->exists()
generic solution working on all the relation types (pre php 7.2):
if (count($model->relation))
{
// exists
}
This will work for every relation since dynamic properti...
How do you roll back (reset) a Git repository to a particular commit? [duplicate]
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git reset --hard <tag/branch/commit id>
Notes:
git reset without the --hard option resets the commit history, but not the files. With the --hard option the files in working tree are also reset. (credited user)
If you wish to commit that state so that t...
What's the better (cleaner) way to ignore output in PowerShell? [closed]
...
I just did some tests of the four options that I know about.
Measure-Command {$(1..1000) | Out-Null}
TotalMilliseconds : 76.211
Measure-Command {[Void]$(1..1000)}
TotalMilliseconds : 0.217
Measure-Command {$(1..1000) > $null}...
How to get the nvidia driver version from the command line?
...debugging CUDA code and checking compatibilities I need to find out what nvidia driver version for the GPU I have installed. I found How to get the cuda version? but that does not help me here.
...
How do I remove the first characters of a specific column in a table?
...erate on, and the number of characters to return (starting at the "right" side of the string). LEN returns the length of the column data, and we subtract four so that our RIGHT function leaves the leftmost 4 characters "behind".
Hope this makes sense.
Edit again - I just read Andrew's response, a...