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Rails auto-assigning id that already exists
... am guessing at your sequence name "company_id_seq", table name "company", and column name "id" ... please replace them with the correct ones. You can get the sequence name with SELECT pg_get_serial_sequence('tablename', 'columname'); or look at the table definition with \d tablename.
An alternate ...
What's the difference between := and = in Makefile?
For variable assignment in Make, I see := and = operator. What's the difference between them?
3 Answers
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Insert a string at a specific index
...d changes the content of a string by removing a range of
* characters and/or adding new characters.
*
* @this {String}
* @param {number} start Index at which to start changing the string.
* @param {number} delCount An integer indicating the number of old chars to remove.
...
How do I make this file.sh executable via double click?
...pt that will execute in Terminal when you open it, name it with the “command” extension, e.g., file.command. By default, these are sent to Terminal, which will execute the file as a shell script.
You will also need to ensure the file is executable, e.g.:
chmod +x file.command
Without this, T...
How to fix SSL certificate error when running Npm on Windows?
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TL;DR - Just run this and don't disable your security:
Replace existing certs
# Windows/MacOS/Linux
npm config set cafile "<path to your certificate file>"
# Check the 'cafile'
npm config get cafile
or extend existing certs
Set this e...
Outline radius?
...or somebody with a similar issue. I had an input field with rounded border and wanted to change colour of focus outline. I couldn't tame the horrid square outline to the input control.
So instead, I used box-shadow. I actually preferred the smooth look of the shadow, but the shadow can be hardened ...
Call PowerShell script PS1 from another PS1 script inside Powershell ISE
...order to find the location of a script, use Split-Path $MyInvocation.MyCommand.Path (make sure you use this in the script context).
The reason you should use that and not anything else can be illustrated with this example script.
## ScriptTest.ps1
Write-Host "InvocationName:" $MyInvocation.Invocat...
Android: Align button to bottom-right of screen using FrameLayout?
...n. I could do it with RelativeLayout using both alignParentBottom="true" and alignParentRight="true" , but with Framelayout I did not find any such attributes. How do I align it to the bottom-right of screen?
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How do you get the width and height of a multi-dimensional array?
... postfix: "",
imageUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
How do I diff the same file between two different commits on the same branch?
......]
For instance, to see the difference for a file "main.c" between now and two commits back, here are three equivalent commands:
$ git diff HEAD^^ HEAD main.c
$ git diff HEAD^^..HEAD -- main.c
$ git diff HEAD~2 HEAD -- main.c
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