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How can I add “href” attribute to a link dynamically using JavaScript?
How can I add the href attribute to a link dynamically using JavaScript?
4 Answers
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Why do we use Base64?
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Your first mistake is thinking that ASCII encoding and Base64 encoding are interchangeable. They are not. They are used for different purposes.
When you encode text in ASCII, you start with a text string and convert it to a sequence of bytes.
When...
How can I see the SQL that will be generated by a given ActiveRecord query in Ruby on Rails
...that a given ActiveRecord Query will generate. I recognize I can get this information from the log after the query has been issued, but I'm wondering if there is a method that can be called on and ActiveRecord Query.
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How can I save an image to the camera roll?
I am new to Xcode (using 4.3) and am not sure how to save an image to the device's camera roll. All that I have done so far is set up an IBAction for the button to save the image. What library method or function can I use to save an image to the user's camera roll?
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AngularJS ng-style with a conditional expression
I am handling my issue like this:
11 Answers
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cartesian product in pandas
... that is repeated for each row, then you can produce a cartesian product using merge (like you would in SQL).
from pandas import DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2 = DataFrame({'key':[1,1], 'col3':[5,6]})
merge(df1, df2,on='key')[['col1', 'col2', 'col3']...
How to create Drawable from resource
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If you happen to want this outside of an Activity class, you'll have to find some other way to reach the Context where getResources() lives; this answer recommends passing it into the constructor
– rymo
Jun 30 '14 at ...
How to handle code when app is killed by swiping in android?
If my app is running and i press home button, the app goes in background. Now if a long press the home button and kill the app by swiping it from the recent app list, none of the events like onPause() , onStop() or onDestroy() gets called rather the process is terminated. So if i want my servic...
Should MySQL have its timezone set to UTC?
...etime columns that you store, and are aware of the issues with daylight savings time.
On the other hand if you have control of the timezones of the servers you work with then you can have everything set to UTC internally and never worry about timezones and DST.
Here are some notes I collected of ...
Singular or plural controller and helper names in Rails
Is there any disadvantage to using singular names for controllers and helpers? Nothing seems to rely on this. It even seems helpers don't have to make the same choice about singular vs. plural as their corresponding controllers, at least according to my limited experimentation. Is that true?
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