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MySQL: Insert record if not exists in table
...an deleting and re-inserting them: dev.mysql.com/doc/refman/5.7/en/replace.html
– Omn
Jul 13 '19 at 22:31
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How to reference constants in EL?
...sing JSF2, then you could use <o:importConstants> of OmniFaces.
<html ... xmlns:o="http://omnifaces.org/ui">
<o:importConstants type="com.example.YourConstants" />
This way they are accessible the usual Javabean way by #{YourConstants.FOO} as well.
Create a wrapper class which r...
Why do browsers match CSS selectors from right to left?
...ll the additional selectors. For this the browser needs to have the entire html and may need to scan the whole page before it starts css painting.
This is contrary to how most libs parse dom. There the dom is constructed and it doesn't need to scan the entire page just find the first element and th...
Undo a Git commit after push using reverse patch?
...e git-revert.
https://www.kernel.org/pub/software/scm/git/docs/git-revert.html
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GitHub relative link in Markdown file
...r2h]: http://github.com/github/markup/tree/master/lib/github/commands/rest2html
[r2hc]: http://github.com/github/markup/tree/master/lib/github/markups.rb#L13
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Is there a way to give a specific file name when saving a file via cURL?
...se the -O option or its alias --remote-name.
curl -O http://url.com/file.html
Stores the output from the remote location in the current directory as file.html.
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Removing Java 8 JDK from Mac
...from Oracle (http://www.oracle.com/technetwork/java/javase/downloads/index.html) and install it.
2) Remove (using rm - if you've got backups, you can revert if you make a mistake) all the JDK6 and JRE6 files.
At this stage, you should see:
% ls /Library/Java/JavaVirtualMachines/
jdk1.7.0_nn.jdk
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ipython: print complete history (not just current session)
...o a text file. (http://ipython.readthedocs.io/en/stable/interactive/magics.html#magic-history)
Then you can use the the get_session_info function to retreive the date and time for the session you are interested in.(http://ipython.readthedocs.io/en/stable/api/generated/IPython.core.history.html?high...
Rails 3.1: Engine vs. Mountable App
...eate app/models
create app/views/layouts/my_mountable_engine/application.html.erb
create app/assets/images/my_mountable_engine
create app/assets/stylesheets/my_mountable_engine/application.css
create app/assets/javascripts/my_mountable_engine/application.js
create config/routes.rb create lib/...
Does Firefox support position: relative on table elements?
...owsers get it right.
Here is a completely annotated jsfiddle with all the HTML, CSS, and JavaScript explained.
http://jsfiddle.net/mrbinky3000/MfWuV/33/
My jsfiddle example above uses "Responsive Web Design" techniques just to show that it will work with a responsive layout. However, your code d...