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Why do most fields (class members) in Android tutorial start with `m`?
...se m for 'members' of a class. So when you're programming you can see the difference between local and member variables.
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Convert a String representation of a Dictionary to a dictionary?
...is problem though its decoder wants double quotes around keys and values. If you don't mind a replace hack...
import json
s = "{'muffin' : 'lolz', 'foo' : 'kitty'}"
json_acceptable_string = s.replace("'", "\"")
d = json.loads(json_acceptable_string)
# d = {u'muffin': u'lolz', u'foo': u'kitty'}
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What's an elegant way to conditionally add a class to an HTML element in a view?
...eact
This technique is inspired by an add-on called classNames (formerly known as classSet) from Facebook’s React front-end framework.
Using in your Rails projects
As of now, the class_names function does not exist in Rails, but this article shows you how to add or implement it into your projec...
Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
...Stage is involved will have cascading delete enabled by default. It means, if you delete a Stage entity
the delete will cascade directly to Side
the delete will cascade directly to Card and because Card and Side have a required one-to-many relationship with cascading delete enabled by default agai...
How to check if a string is a valid date
...errors which we don't expect and make the debugging of the code extremely difficult.
– yagooar
Jan 29 '13 at 10:32
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How do I convert datetime to ISO 8601 in PHP
...Time::ATOM); // Updated ISO8601
Procedural
For older versions of PHP, or if you are more comfortable with procedural code.
echo date(DATE_ISO8601, strtotime('2010-12-30 23:21:46'));
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How to declare a variable in a PostgreSQL query
... CTEs being used as vriables. But than i quickly ran into a problem where different data modifying queries in CTEs are not guaranteed to see each other's effects. I had to use multiple CTEs as i needed to use that variable in multiple queries.
– Zia Ul Rehman Mughal
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How do you get the length of a list in the JSF expression language?
...this.somelist.length; }
In your JSF page:
#{MyBean.somelistLength}
Two: If you're using Facelets (Oh, God, why aren't you using Facelets!), you can add the fn namespace and use the length function
In JSF page:
#{ fn:length(MyBean.somelist) }
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Integrate ZXing in Android Studio
...ent over a day trying to import Zxing from another project and was getting nowhere. Then I found this link and BAM it's done. Just follow the code example as above from this link: github.com/zxing/zxing/wiki/Scanning-Via-Intent.
– Jack BeNimble
Apr 8 '15 at 3:3...
DropDownList in MVC 4 with Razor
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If you defined the List in controller, Then you need in View to cast it , like this: @Html.DropDownListFor(model => model.model_year, ViewBag.Years as List<SelectListItem>, "-- Select Year --")
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