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How to check if the string is empty?
Does Python have something like an empty string variable where you can do:
25 Answers
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How do I clone a Django model instance object and save it to the database?
...ere.
Official docs on copying model instances: https://docs.djangoproject.com/en/2.2/topics/db/queries/#copying-model-instances
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Getting java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory exception
... faced the same issues, to fix, download the jar files from the below url
http://commons.apache.org/logging/download_logging.cgi
and copy to your lib folder, will resolve your issue.
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Constructors in JavaScript objects
...ost of you are giving example of getters and setters not a constructor, ie http://en.wikipedia.org/wiki/Constructor_(object-oriented_programming).
lunched-dan was closer but the example didn't work in jsFiddle.
This example creates a private constructor function that only runs during the creation ...
What special characters must be escaped in regular expressions?
...regex flavor you're working with.
For PCRE, and most other so-called Perl-compatible flavors, escape these outside character classes:
.^$*+?()[{\|
and these inside character classes:
^-]\
For POSIX extended regexes (ERE), escape these outside character classes (same as PCRE):
.^$*+?()[{\|
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When should I use Debug.Assert()?
...nd the stack as if you had put a breakpoint there.
PS: If you liked Code Complete, I recommend following it up with this book. I bought it to learn about using WinDBG and dump files, but the first half is packed with tips to help avoid bugs in the first place.
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Custom Adapter for List View
...lt;?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content" android:orientation="vertical"
android:layout_width="fill_parent">
<TableRow android:layout_width="fill_parent"
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How to manually trigger validation with jQuery validate?
...e form... to validate only 1 field, the correct way is this: stackoverflow.com/a/12195091/114029
– Leniel Maccaferri
Jul 12 '13 at 15:50
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How to remove leading and trailing white spaces from a given html string?
I've the following HTML string. What would be sample code in JavaScript to remove leading and trailing white spaces from this string?
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