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How safe is it to store sessions with Redis?
...ow you want to persist session state to your hard-disk. You can go through http://redis.io/topics/persistence to learn more, but at a high level, here are your options -
If you cannot afford losing any sessions, set appendfsync always in your configuration file. With this, Redis guarantees that a...
How to get the original value of an attribute in Rails
...previous value.
For rails 5.1+
Copied from Lucas Andrade's answer below: https://stackoverflow.com/a/50973808/9359123
Appending _was is deprecated in rails 5.1, now you should append _before_last_save
Something like:
before_save object
do_something_with object.name_before_last_save
end
W...
How can I add a boolean value to a NSDictionary?
... @"key": @NO } mutableCopy];
foo[@"bar"] = @YES;
For more info on that:
http://clang.llvm.org/docs/ObjectiveCLiterals.html
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Call AngularJS from legacy code
...sayHi();
microappscope().sayBye();
You can see a working example here:
http://jsfiddle.net/peterdrinnan/2nPnB/16/
I also showed this in a slideshow for the Ottawa AngularJS group (just skip to the last 2 slides)
http://www.slideshare.net/peterdrinnan/angular-for-legacyapps
...
Disable browser 'Save Password' functionality
...o use the autocomplete form element attribute with value "off".
From http://developer.mozilla.org/En/How_to_Turn_Off_Form_Autocompletion
Some minor research shows that this works in IE to but I'll leave no guarantees ;)
@Joseph: If it's a strict requirement to pass XHTML validation with the...
How to make an ImageView with rounded corners?
...u can do the following code to manually round the corners of your images.
http://www.ruibm.com/?p=184
This isn't my code, but I've used it and it's works wonderfully. I used it as a helper within an ImageHelper class and extended it just a bit to pass in the amount of feathering I need for a given...
Creating java date object from year,month,day
...y when working with dates, timestamps and durations. Use HalDateTime from
http://sourceforge.net/projects/haldatetime/?source=directory
For example you can just use it to parse your input like this:
HalDateTime mydate = HalDateTime.valueOf( "25.12.1988" );
System.out.println( mydate ); // will ...
Insert picture into Excel cell [closed]
...
There is some faster way (https://www.youtube.com/watch?v=TSjEMLBAYVc):
Insert image (Ctrl+V) to the excel.
Validate "Picture Tools -> Align -> Snap To Grid" is checked
Resize the image to fit the cell (or number of cells)
Right-click on the i...
How to detect Adblock on my website?
...
http://thepcspy.com/read/how_to_block_adblock/
With jQuery:
function blockAdblockUser() {
if ($('.myTestAd').height() == 0) {
window.location = 'http://example.com/AdblockNotice.html';
}
}
$(document).ready...
What is the difference between the hidden attribute (HTML5) and the display:none rule (CSS)?
... hidden from all presentations, including, for instance, screen readers.
http://dev.w3.org/html5/spec/Overview.html#the-hidden-attribute
Since CSS can target different media/presentation types, display: none will be dependent on a given presentation. E.g. some elements might have display: none wh...