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What is the bower (and npm) version syntax?
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In a nutshell, the syntax for Bower version numbers (and NPM's) is called SemVer, which is short for 'Semantic Versioning'. You can find documentation for the detailed syntax of SemVer as used in Bower and NPM on the API for the semver parser within Node/npm. You can learn more about the und...
Querying DynamoDB by date
...pdated Answer:
DynamoDB allows for specification of secondary indexes to aid in this sort of query. Secondary indexes can either be global, meaning that the index spans the whole table across hash keys, or local meaning that the index would exist within each hash key partition, thus requiring the ...
Resize image to full width and fixed height with Picasso
... where just using .centerInside() was crashing with Center inside requires calling resize with positive width and height. error message.
– Rock Lee
May 10 '17 at 21:17
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Check if a string is null or empty in XSLT
...me == null || categoryName.equals(""))
For more details e.g., distinctly identifying null vs. empty, see johnvey's answer below and/or the XSLT 'fiddle' I've adapted from that answer, which includes the option in Michael Kay's comment as well as the sixth possible interpretation.
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How to make a DIV visible and invisible with JavaScript
...t then
[DIV].style.visibility='visible'
OR
[DIV].style.visibility='hidden'
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How to affect other elements when one element is hovered
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If the cube is directly inside the container:
#container:hover > #cube { background-color: yellow; }
If cube is next to (after containers closing tag) the container:
#container:hover + #cube { background-color: yellow; }
If the cube is somewhe...
Auto increment in phpmyadmin
...to limit such number.
It is perfectly safe, and common practice to set an id number as a primiary key, auto incrementing int. There are alternatives such as using PHP to generate membership numbers for you in a specific format and then checking the number does not exist prior to inserting, however ...
What's wrong with using $_REQUEST[]?
...bly vulnerable to Delayed Cross Site Request
Forgery problems. (This basically means if e.g. a cookie named (age)
exists it will always overwrite the GET/POST content and therefore
unwanted requests will be performed)
and in a later reply to the same thread
It is not about the fact that ...
Difference between CSS3 transitions' ease-in and ease-out
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CSS3's transitions and animations support easing, formally called a "timing function". The common ones are ease-in, ease-out, ease-in-out, ease, and linear, or you can specify your own using cubic-bezier().
ease-in will start the animation slowly, and finish at full speed.
ease-out...
Generate GUID in MySQL for existing Data?
I've just imported a bunch of data to a MySQL table and I have a column "GUID" that I want to basically fill down all existing rows with new and unique random GUID's.
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