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Disable ActiveRecord for Rails 4
...require "action_mailer/railtie"
require "sprockets/railtie"
require "rails/test_unit/railtie"
Remove config.active_record.raise_in_transactional_callbacks = true from config/application.rb
3. Delete your config/database.yml file, db/schema.rb and migrations (if any)
4. Delete migration check in ...
Correctly determine if date string is a valid date in that format
...aken from this answer. Also on php.net. Originally written by Glavić.]
Test cases:
var_dump(validateDate('2013-13-01')); // false
var_dump(validateDate('20132-13-01')); // false
var_dump(validateDate('2013-11-32')); // false
var_dump(validateDate('2012-2-25')); // false
var_dump(validateDat...
How to change app name per Gradle build type
...e non-release part, I see that a bit differently as one might want to also test for localization issues while allowing the "release" and "test" builds to coexist on the same device. In such a case both builds might end up with the same launcher label, probably causing some confusion. That is what I ...
Cross-browser testing: All major browsers on ONE machine
...
Contents
Which browsers have to be tested?
Rules of thumb: Which browsers should be included?
Preparation
Windows XP
Windows 7+ (for IE9+)
Browser downloads
Internet Explorer
Firefox
Opera
Chrome
Safari
Adobe Flash Pl...
Specifying colClasses in the read.csv
...nly one columns.
So in your example you should use:
data <- read.csv('test.csv', colClasses=c("time"="character"))
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Why does typeof NaN return 'number'?
... or
greater than +1.
All these values may not be the same. A simple test for a NaN is to test value == value is false.
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How do I read CSV data into a record array in NumPy?
...
I tested code similar to this with a csv file containing 2.6 million rows and 8 columns. numpy.recfromcsv() took about 45 seconds, np.asarray(list(csv.reader())) took about 7 seconds, and pandas.read_csv() took about 2 seconds ...
What's the fastest way to loop through an array in JavaScript?
...
After performing this test with most modern browsers:
https://jsben.ch/wY5fo
Currently, the fastest form of loop (and in my opinion the most syntactically obvious).
A standard for-loop with length caching
var i = 0, len = myArray.length;
w...
How do you set a default value for a MySQL Datetime column?
...ith DATETIME...
But you can do it with TIMESTAMP:
mysql> create table test (str varchar(32), ts TIMESTAMP DEFAULT CURRENT_TIMESTAMP);
Query OK, 0 rows affected (0.00 sec)
mysql> desc test;
+-------+-------------+------+-----+-------------------+-------+
| Field | Type | Null | Key | ...
What's a quick way to test to see a file exists?
...he directory's files, or I can try to open a specific file. What's the fastest way? I just need to know if the file is there or if it does not exist.
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