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C# elegant way to check if a property's property is null
...x.PropertyC);
This simple extension method and much more you can find on http://devtalk.net/csharp/chained-null-checks-and-the-maybe-monad/
EDIT:
After using it for moment I think the proper name for this method should be IfNotNull() instead of original With().
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What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
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Copied verbatim from http://cocoaheads.tumblr.com/post/17757846453/objective-c-literals-for-nsdictionary-nsarray-and:
Objective-C literals: one can now create literals for NSArray, NSDictionary, and NSNumber (just like one can create literals fo...
How to print out more than 20 items (documents) in MongoDB's shell?
...ow more about what else you can do, I suggest you to look at this article: http://mo.github.io/2017/01/22/mongo-db-tips-and-tricks.html
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Get index of array element faster than O(n)
...')
# get LAST index of element searched
puts array.rindex('a')
index: http://www.ruby-doc.org/core-1.9.3/Array.html#method-i-index
rindex: http://www.ruby-doc.org/core-1.9.3/Array.html#method-i-rindex
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COALESCE Function in TSQL
...sn't NULL.
There's a much more thorough description of the details here
http://www.mssqltips.com/sqlservertip/2689/deciding-between-coalesce-and-isnull-in-sql-server/
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Use a normal link to submit a form
...ry research from whole document to find the right form.
<form action="http://www.greatsolutions.com.br/indexint.htm"
method="get">
<h3> Enter your name</h3>
First Name <input type="text" name="fname" size="30"><br>
Last Name <inp...
How to apply specific CSS rules to Chrome only?
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CSS Solution
from https://jeffclayton.wordpress.com/2015/08/10/1279/
/* Chrome, Safari, AND NOW ALSO the Edge Browser and Firefox */
@media and (-webkit-min-device-pixel-ratio:0) {
div{top:10;}
}
/* Chrome 29+ */
@media screen and (-webki...
Bootstrap 3: pull-right for col-lg only
... </div>
</div>
</div>
</div>
Demo: http://bootply.com/88095
Another option is to override the float of .pull-right using a @media query..
@media (max-width: 1200px) {
.row .col-lg-6 > .pull-right {
float: none !important;
}
}
Lastly, ano...
How to access the local Django webserver from outside world
...o pip install django
2) Ensure that security group in-bound rules includ http on port 80 for 0.0.0.0/0
configured through AWS console
3) Add Public IP and DNS to ALLOWED_HOSTS
ALLOWED_HOSTS is a list object that you can find in settings.py
ALLOWED_HOSTS = ["75.254.65.19","ec2-54-528-27-21.co...
Java: random long number in 0
... see @mawaldne's answer), or implement your own nextLong(n).
According to https://docs.oracle.com/javase/1.5.0/docs/api/java/util/Random.html nextInt is implemented as
public int nextInt(int n) {
if (n<=0)
throw new IllegalArgumentException("n must be positive");
if ...