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How to specify a multi-line shell variable?
... Not sure why you want or need the leading line break. For my application I did not so I just started with sql="SELECT c2, c2
– bhfailor
Jan 30 '18 at 1:31
1
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How to evaluate http response codes from bash/shell script?
...final status. If you want to show all HTTP statuses for all requests, use my example below.
– siliconrockstar
Oct 31 '15 at 2:52
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How to insert a row in an HTML table body in JavaScript
...reference to it and add it there.
var tableRef = document.getElementById('myTable').getElementsByTagName('tbody')[0];
// Insert a row in the table at the last row
var newRow = tableRef.insertRow();
// Insert a cell in the row at index 0
var newCell = newRow.insertCell(0);
// Append a text nod...
Disable ActiveRecord for Rails 4
...reating a new application, you can use -O to skip ActiveRecord:
rails new my_app -O
For existing applications:
1. Remove database adapter gems from your Gemfile (mysql2, sqlite3, etc.)
2. Change your config/application.rb
Remove require 'rails/all line and require frameworks (among those avail...
HTTP requests and JSON parsing in Python
...packages. On the other hand, when portability/compatibility is trivial, in my opinion it's worth it.
– nyuszika7h
Jun 10 '14 at 20:53
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git add only modified changes and ignore untracked files
... To only add modified files, I usually go top the top directory of my repo and type for fil in $(git diff --name-only --relative); do git add $fil; done. If I were to use it a lot (I don't), I would just make an alias for this in my ~/.bashrc file. This does, of course, only work in bash.
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Global access to Rake DSL methods is deprecated
...ave already activated Rake 0.9.1 ...
I still had a copy of Rake 0.9.1 in my directory so I deleted it.
You can "delete" Rake 0.9.1 by running the following command:
gem uninstall rake -v=0.9.1
If you have multiple versions of the gem installed, you'll be prompted to pick a version.
After 0.9...
Why are elementwise additions much faster in separate loops than in a combined loop?
Suppose a1 , b1 , c1 , and d1 point to heap memory and my numerical code has the following core loop.
10 Answers
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How to convert an entire MySQL database characterset and collation to UTF-8?
How can I convert entire MySQL database character-set to UTF-8 and collation to UTF-8?
19 Answers
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Eventual consistency in plain English
...blerare it's "bad" for varying degrees of badness. It would be very bad if my ATM balance was out of date. It's less bad if my logging database isn't quite caught up, or if my Facebook feed is a few seconds behind. Data replication and durability mechanisms are very varied, and depend on the particu...