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Getting the count of unique values in a column in bash
...
The GNU site suggests this nice awk script, which prints both the words and their frequency.
Possible changes:
You can pipe through sort -nr (and reverse word and freq[word]) to see the result in descending order.
If you want a specific column, you can omit...
When to use IMG vs. CSS background-image?
...er {
background-image:url(image_2.jpg);
}
This saves any kind of JavaScript or jQuery animation to fade an <img/>'s src.
More information about transitions on MDN.
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Changing Font Size For UITableView Section Headers
...ont boldSystemFontOfSize:18];
myLabel.text = [self tableView:tableView titleForHeaderInSection:section];
UIView *headerView = [[UIView alloc] init];
[headerView addSubview:myLabel];
return headerView;
}
In Swift:
func tableView(_ tableView: UITableView, viewForHeaderInSection se...
ab load testing
...d. It runs any command even when you close the terminal.
I wrote a simple script that automates the whole process, feel free to use it: http://blog.ikvasnica.com/entry/load-test-multiple-api-endpoints-concurrently-use-this-simple-shell-script
...
“Uncaught Error: [$injector:unpr]” with angular after deployment
...esolve your dependencies. This is a common issue with angular when the javascript gets minified/uglified/whatever you're doing to it for production.
The issue is when you have e.g. a controller;
angular.module("MyApp").controller("MyCtrl", function($scope, $q) {
// your code
})
The minificatio...
What is routes.IgnoreRoute(“{resource}.axd/{*pathInfo}”)
....axd files don't exist physically. ASP.NET uses URLs with .axd extensions (ScriptResource.axd and WebResource.axd) internally, and they are handled by an HttpHandler.
Therefore, you should keep this rule, to prevent ASP.NET MVC from trying to handle the request instead of letting the dedicated Http...
HTTP redirect: 301 (permanent) vs. 302 (temporary)
...c. If that is webcomic.com/latest and redirects to webcomic.com/some-comic-title with a 301 the browser will always redirect to "some-comic-title". Even when the next comic has been published and "latest" now redirects to "another-comic-title"... This is where a 302 would be better.
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Does have to be in the of an HTML document?
...element can be used:
Where metadata content is expected.
In a <noscript> element that is a child of a <head> element.
CTRL-Fing through the single-page spec reveals that the only element whose content model includes metadata content is the head element.
The non-normative index ...
npm install vs. update - what's the difference?
...
I'd also note that scripts like postinstall run on install, but not on update.
– Michael Marvick
Jun 23 '16 at 3:45
2
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jQuery get the image src
...onsole.log('for relative image url ' + $('#imageId').attr('src'));
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<img id='imageId' src='images/image1.jpg' height='50px' width='50px'/>
<input type='button' onclick='showImgUrl()' ...