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Restore file from old commit in git
...will just overwrite the local file path/to/file.txt
See man git-rev-parse for possible revision specifications there (of course a simple hash (like dd9bacb) will do nicely)
Don't forget to commit the change (after a review...)
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What is causing this ActiveRecord::ReadOnlyRecord error?
...t returns raw row/column data, not ActiveRecords. You have two options:
Force the instance variable @readonly to false in the record (hack)
Use :include => :card instead of :join => :card
Rails 2.3.4 and above
Most of the above no longer holds true, after September 10 2012:
using Recor...
change text of button and disable button in iOS
...e done pretty easily as follows;
[myButton setTitle:@"Normal State Title" forState:UIControlStateNormal]; // To set the title
[myButton setEnabled:NO]; // To toggle enabled / disabled
If you have created the buttons in the Interface Builder and want to access them in code, you can take advantage ...
multiprocessing: sharing a large read-only object between processes?
...ltiprocessing share objects created earlier in the program?"
No (python before 3.8), and Yes in 3.8 (https://docs.python.org/3/library/multiprocessing.shared_memory.html#module-multiprocessing.shared_memory)
Processes have independent memory space.
Solution 1
To make best use of a large structur...
What is Full Text Search vs LIKE
...ves). Using the LIKE operator gives you 100% precision with no concessions for recall. A full text search facility gives you a lot of flexibility to tune down the precision for better recall.
Most full text search implementations use an "inverted index". This is an index where the keys are individu...
How to get URL of current page in PHP [duplicate]
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$_SERVER['REQUEST_URI']
For more details on what info is available in the $_SERVER array, see the PHP manual page for it.
If you also need the query string (the bit after the ? in a URL), that part is in this variable:
$_SERVER['QUERY_STRING']
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How to update attributes without validation
...found out that I can't update an attribute without validating the object before.
6 Answers
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jQuery disable a link
...link, which is to visit the specified href.
From the jQuery tutorial:
For click and most other events, you
can prevent the default behaviour -
here, following the link to jquery.com
- by calling event.preventDefault() in the event handler
If you want to preventDefault() only if a certai...
How to detect scroll position of page using jQuery
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You are looking for the window.scrollTop() function.
$(window).scroll(function() {
var height = $(window).scrollTop();
if(height > some_number) {
// do something
}
});
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How do I get the Git commit count?
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To get a commit count for a revision (HEAD, master, a commit hash):
git rev-list --count <revision>
To get the commit count across all branches:
git rev-list --all --count
I recommend against using this for build identifier, but if you...