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Adding :default => true to boolean in existing Rails column
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Also, as per the doc:
default cannot be specified via command line
https://guides.rubyonrails.org/active_record_migrations.html
So there is no ready-made rails generator. As specified by above answers, you have to fill manually your migration file with the change_column_default method.
You...
How to convert String to long in Java?
...g -> Long, Long.valueOf(primitiveLong). So Long number = Long.valueOf("123"), Long number = Long.parseLong("123") and Long number = Long.valueOf(Long.parseString("123") all end up doing pretty much the same thing. What you do want to be careful about is not calling constructors of the boxed pri...
move_uploaded_file gives “failed to open stream: Permission denied” error
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ps aux | grep https doesn't return web server owner name. This does : ps aux | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d\ -f1 Fron Symfony doc.
– David Jacquel
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(Built-in) way in JavaScript to check if a string is a valid number
...rns true if the variable does NOT contain a valid number
Examples
isNaN(123) // false
isNaN('123') // false
isNaN('1e10000') // false (This translates to Infinity, which is a number)
isNaN('foo') // true
isNaN('10px') // true
Of course, you can negate this if you need...
How would one call std::forward on all arguments in a variadic function?
...eUploader: {
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 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Inspect attached event handlers for any DOM element
Is there any way to view what functions / code are attached to any event for a DOM element? Using Firebug or any other tool.
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Add a prefix to all Flask routes
..._ROOT config value to your prefix:
app.config["APPLICATION_ROOT"] = "/abc/123"
@app.route("/")
def index():
return "The URL for this page is {}".format(url_for("index"))
# Will return "The URL for this page is /abc/123/"
Setting the APPLICATION_ROOT config value simply limit Flask's session...
How can I pass a Bitmap object from one activity to another
...yteArray, then it can be safely passed via an Intent.
Implementation
The function is contained in a separate thread using Kotlin Coroutines because the Bitmap compression is chained after the Bitmap is created from an url String. The Bitmap creation requires a separate thread in order to avoid App...
How do I fetch a single model in Backbone?
...have implemented controllers with the hashbang in your URL like so, http://www.mydomain.com/#clocks/123 , but it should work even if you haven't yet.
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How to get the browser language using JavaScript [duplicate]
...turns an array of language preference: navigator.languages //["en-US", "zh-CN", "ja-JP"] This should work on at least 95% of browsers in 2020.
– Cornelius Roemer
Mar 9 at 13:13
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