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How do you make an array of structs in C?
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@JohnSmith You are mistaken; read it again. sizeof *students is the size of what's pointed at, i.e. sizeof(STUDENT), not sizeof(STUDENT*). You are making the exact mistake that the ptr = malloc(num * sizeof *ptr) idiom is supposed to guard against. Check...
How can I select an element by name with jQuery?
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<input type="checkbox" name="mycheckbox" value="12">
You can read all like this:
jQuery("input[name='mycheckbox']").each(function() {
console.log( this.value + ":" + this.checked );
});
The snippet:
jQuery("input[name='mycheckbox']").each(function() {
console.log( this.v...
What is the difference between README and README.md in GitHub projects?
I've noticed some GitHub projects have not only a README file, but also a README.md file.
4 Answers
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How do I run a program with a different working directory from current, from Linux shell?
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I always think UNIX tools should be written as filters, read input from stdin and write output to stdout. If possible you could change your helloworld binary to write the contents of the text file to stdout rather than a specific file. That way you can use the shell to write you...
Good Linux (Ubuntu) SVN client [closed]
...wn my machine to the point of unusability.
– Matthew Read
Nov 30 '11 at 22:15
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How to display PDF file in HTML?
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If you want to use pdf.js, I suggest you to read THIS
You can also upload your pdf somewhere (like Google Drive) and use its URL in a iframe
or
<object data="data/test.pdf" type="application/pdf" width="300" height="200">
<a href="data/test.pdf">test.pd...
When restoring a backup, how do I disconnect all active connections?
...the wait time? If so, I wonder if it's a cleaner/nicer way to at least let read-only actions complete rather then end them abruptly?
– Jason
Feb 8 '18 at 16:01
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How can I tell when a MySQL table was last updated?
...function, to change the file timestamp.
On page display:
use stat() to read back the file modification time.
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Determine what attributes were changed in Rails after_save callback?
...ls 5.1 (but is deprecated in 5.1 and has breaking changes in 5.2). You can read about the change in this pull request.
In your after_update filter on the model you can use _changed? accessor. So for example:
class SomeModel < ActiveRecord::Base
after_update :send_notification_after_change
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Rails 4 image-path, image-url and asset-url no longer work in SCSS files
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Another point is to read the documentation guides.rubyonrails.org/asset_pipeline.html. Also can you see in the Web Developer Debug of your browser if the images are being loaded?
– H.Rabiee
Nov 28 '13 at 9:...