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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
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@blub: If you create a unique key on geb and topic it will work (ALTER TABLE table ADD UNIQUE geb_by_topic (geb, topic)).
– chaos
Aug 2 '09 at 13:43
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Call AngularJS from legacy code
...using jQuery's .data function. This will speed your app up. Additionally, handing off your scopes to jquery's caching features will create memory leaks. So, you should definitely turn this off, to speed up your app. Angular's site has a production guide that you should use to learn more.
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How do I increase the RAM and set up host-only networking in Vagrant?
I would like to increase the RAM to at least 1 GB and I would like to configure “Host-Only” networking to use "199.188.44.20".
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How can I resize an image dynamically with CSS as the browser width/height changes?
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This can be done with pure CSS and does not even require media queries.
To make the images flexible, simply add max-width:100% and height:auto. Image max-width:100% and height:auto works in IE7, but not in IE8 (yes, another weird IE bug). To fix this, you...
how to set radio option checked onload with jQuery
...value='Male'>
<input type='radio' name='gender' value='Female'>
And you wanted to check the one with a value of "Male" onload if no radio is checked:
$(function() {
var $radios = $('input:radio[name=gender]');
if($radios.is(':checked') === false) {
$radios.filter('[value=...
Is it possible to disable scrolling on a ViewPager
...antiates a View . I'd like to disable both the scrolling of the viewpager and the child buttons momentarily while a search result is returned to the view. I've calling viewPager.setEnabled(false) but this doesn't disable it.
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Random string generation with upper case letters and digits
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Answer in one line:
''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(N))
or even shorter starting with Python 3.6 using random.choices():
''.join(random.choices(string.ascii_uppercase + string.digits, k=N))
A cryptographi...
Flexbox and Internet Explorer 11 (display:flex in ?)
I am planning to move away from "floaty" layouts and use CSS flexbox for future projects. I was delighted to see that all major browsers in their current versions seem to support (in one way or another) flexbox.
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Chrome Extension how to send data from content script to popup.html
...s but honestly I don't get them. I am new to JavaScript, Chrome Extensions and everything and I have this class assignment.
So I need to make a plugin that would count DOM objects on any given page using Cross Domain Requests.
I've been able to achieve this so far using Chrome Extension API's.
Now...
Setting href attribute at runtime
...ector. If you have set the class for the anchor element, use '.class-name' and if you have set the id for the anchor element, use '#element-id'.
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