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Get current batchfile directory
... the %0 variable is expanded, the result is enclosed in quotation marks.
More on batch parameters.
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python max function using 'key' and lambda expression
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With a single iterable argument, return its largest item. With two or
more arguments, return the largest argument.
So, it simply returns the object that is the largest.
How does key work?
By default in Python 2 key compares items based on a set of rules based on the type of the objects (f...
What's the point of the X-Requested-With header?
...redirect step. It appears it also worked on Chrome, but is now remediated. More details here including different versions affected.
OWASP Recommend combining this with an Origin and Referer check:
This defense technique is specifically discussed in section 4.3 of
Robust Defenses for Cross-Sit...
Explain the encapsulated anonymous function syntax
...n this case, the one that is available is the one that alerts "false". For more info, read you don't know JS
– Saurabh Misra
Mar 7 '18 at 10:29
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Asynctask vs Thread in android
... do not require downloading a lot of data
Disk-bound tasks that might take more than a few milliseconds
Use Java threads for:
Network operations which involve moderate to large amounts of data (either uploading or downloading)
High-CPU tasks which need to be run in the background
Any task where ...
What is attr_accessor in Ruby?
... the instance variables in the attr_* statement? It seems that it would be more straight forward to use the same '@' syntax that is used elsewhere in the class to refer to the variable.
– Will
May 24 '12 at 18:34
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What does the exclamation mark do before the function?
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So what the author is doing is saving a byte per function expression; a more readable way of writing it would be this:
(function(){})();
Lastly, ! makes the expression return true. This is because by default all IIFE return undefined, which leaves us with !undefined which is true. Not particul...
How to handle multiple cookies with the same name?
...the same name match a given request URI, one is chosen by the browser.
The more specific the path, the higher the precedence. However precedence based on other attributes, including the domain, is unspecified, and may vary between browsers. This means that if you have set cookies of the same name ag...
MySQL, better to insert NULL or empty string?
...NULL you can distinguish between "put no data" and "put empty data".
Some more differences:
A LENGTH of NULL is NULL, a LENGTH of an empty string is 0.
NULLs are sorted before the empty strings.
COUNT(message) will count empty strings but not NULLs
You can search for an empty string using a bound...
Join/Where with LINQ and Lambda
...'re familiar with SQL syntax, using the LINQ query syntax is much clearer, more natural, and makes it easier to spot errors:
var id = 1;
var query =
from post in database.Posts
join meta in database.Post_Metas on post.ID equals meta.Post_ID
where post.ID == id
select new { Post = post, ...