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How to access the first property of a Javascript object?
... access also other properties by indexes. Be aware tho! Object.keys return order is not guaranteed as per ECMAScript however unofficially it is by all major browsers implementations, please read https://stackoverflow.com/a/23202095 for details on this.
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sudo echo “something” >> /etc/privilegedFile doesn't work
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Use tee --append or tee -a.
echo 'deb blah ... blah' | sudo tee -a /etc/apt/sources.list
Make sure to avoid quotes inside quotes.
To avoid printing data back to the console, redirect the output to /dev/null.
echo 'deb blah ... blah' | sudo tee -a /etc/apt/sources.list > /dev/null
Rem...
Cosmic Rays: what is the probability they will affect a program?
...rror Rate of 10-12 for their memory modules", "a observed error rate is 4 orders of magnitude lower than expected". For data-intensive tasks (8 GB/s of memory reading) this means that single bit flip may occur every minute (10-12 vendors BER) or once in two days (10-16 BER).
2009 Google's paper "DR...
How to manage client-side JavaScript dependencies? [closed]
...cript you can do so by adding
those files to the app/ folder. Note that in order to expose your script via
the 'require' method you must make it a CommonJS module. It is very simple -
see the hem docs.
Local files
If you want to include non-CommonJS non 'require' code you can also stitch that
by r...
How to know when UITableView did scroll to bottom in iPhone
I would like to know when a UITableView did scroll to bottom in order to load and show more content, something like a delegate or something else to let the controller know when the table did scroll to bottom.
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Changing selection in a select with the Chosen plugin
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Sometimes you have to remove the current options in order to manipulate the selected options.
Here is an example how to set options:
<select id="mySelectId" class="chosen-select" multiple="multiple">
<option value=""></option>
<option value="Argentin...
When to use Comparable and Comparator
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Use Comparable if you want to define a default (natural) ordering behaviour of the object in question, a common practice is to use a technical or natural (database?) identifier of the object for this.
Use Comparator if you want to define an external controllable ordering behaviour...
How to get all subsets of a set? (powerset)
...deally a set) into a list because by a set is a data structure of unique unordered elements, and the order will be crucial to generate the subsets.
selector is key in this algorithm. Note that selector has the same length as the input set, and to make this possible it is using an f-string with padd...
Creating a config file in PHP
...rge PHP applications. However you will likely need to solve the problem in order to find the PHP code which gets incorporated / re-used at runtime.
Common approaches to this are to always use relative directories, or to search from the current directory upwards to find a file exclusively named in t...
Wrong Manifest.mf in IntelliJ IDEA created .jar
...ittently overwrite the new manually created manifest. Messing around with order of operations seemed to make it work.
UPDATE:
This is definitely a bug in Idea. This linked answer works reliably when there are extracted directories. In essence, you find your .idea/JARNAME.xml, add add the follo...