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How to test if parameters exist in rails
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use blank? http://api.rubyonrails.org/classes/Object.html#method-i-blank-3F
unless params[:one].blank? && params[:two].blank?
will return true if its empty or nil
also... that will not work if you are testing boolean values.. since
>> false.blank?
=> true
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mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }
...yPreferred
http://mongodb.github.io/node-mongodb-native/3.6/api/Collection.html (search readPreference)
const { MongoClient, ReadPreference } = require('mongodb');
const client = await MongoClient.connect(MONGODB_CONNECTIONSTRING, { readPreference: ReadPreference.PRIMARY_PREFERRED });
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Format Float to n decimal places
...ormat.
https://docs.oracle.com/javase/8/docs/api/java/text/DecimalFormat.html
So what you need to do is (for instance):
NumberFormat formatter = NumberFormat.getInstance(Locale.US);
formatter.setMaximumFractionDigits(2);
formatter.setMinimumFractionDigits(2);
formatter.setRoundingMode(RoundingMo...
The opposite of Intersect()
...d found it much faster: skylark-software.com/2011/07/linq-and-set-notation.html
– Colin
Jul 18 '17 at 18:20
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how to return index of a sorted list? [duplicate]
...)).keys()
[2, 0, 1, 3, 4]
See http://docs.python.org/library/collections.html#collections.OrderedDict for details.
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How to fix “containing working copy admin area is missing” in SVN?
...o this: http://www.devcha.com/2008/03/svn-directory-svn-containing-working.html
Check-out the folder "blabla" to a different location and then copy its .svn folder back into the original "blabla".
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How to select option in drop down using Capybara
...e a model for your Organization;
extra: It will be easier to populate your HTML.
2) Create a factory (FactoryGirl) for your model;
3) Create a list (create_list) with the factory;
4) 'pick' (sample) a Organization from the list with:
# Random select
option = Organization.all.sample
# Select th...
How to change a TextView's style at runtime
...in TextView
http://developer.android.com/reference/android/widget/TextView.html
To style your strings, attach android.text.style.* objects to a SpannableString, or see the Available Resource Types documentation for an example of setting formatted text in the XML resource file.
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How do I sort a list of dictionaries by a value of the dictionary?
... In the documentation (docs.python.org/2/tutorial/datastructures.html) the optional key argument for list.sort() is not described. Any idea where to find that?
– TTT
Feb 21 '14 at 15:21
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Is there any performance reason to declare method parameters final in Java?
...me performance benefit.
http://www.javaperformancetuning.com/tips/final.shtml
Oh and another good resource
http://mindprod.com/jgloss/final.html
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