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Hexadecimal To Decimal in Shell Script
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To convert from hex to decimal, there are many ways to do it in the shell or with an external program:
With bash:
$ echo $((16#FF))
255
with bc:
$ echo "ibase=16; FF" | bc
255
with perl:
$ perl -le 'print hex("FF");'
255
with printf :
$ printf "%d\n" 0xFF
255
with python:
$ python -c ...
Double vs. BigDecimal?
...eague suggest me to use BigDecimal instead of double since it will be more precise. But I want to know what it is and how to make most out of BigDecimal ?
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What is a monad?
... mathematician. An alternative term is computation builder which is a bit more descriptive of what they are actually useful for.
They are a pattern for chaining operations. It looks a bit like method chaining in object-oriented languages, but the mechanism is slightly different.
The pattern is mostl...
How to use performSelector:withObject:afterDelay: with primitive types in Cocoa?
The NSObject method performSelector:withObject:afterDelay: allows me to invoke a method on the object with an object argument after a certain time. It cannot be used for methods with a non-object argument (e.g. ints, floats, structs, non-object pointers, etc.).
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How to post data to specific URL using WebClient in C#
...t())
{
wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
string HtmlResult = wc.UploadString(URI, myParameters);
}
it works like charm :)
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Which $_SERVER variables are safe?
...riable that a user can control, an attacker can also control and is therefore a source of an attack. This is called a "tainted" variable, and is unsafe.
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How do I update an entity using spring-data-jpa?
Well the question pretty much says everything. Using JPARepository how do I update an entity?
9 Answers
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Node.js/Express.js App Only Works on Port 3000
I have a Node.js/Express.js app running on my server that only works on port 3000 and I'm trying to figure out why. Here's what I've found:
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How does “this” keyword work within a function?
.... Inside those objects, the this pointer is being used. From the behavior of the program, I have deduced that the this pointer is referring to the class on which the method was invoked, and not the object being created by the literal.
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Git branching strategy integated with testing/QA process
...main reason is that we do not want to "pollute" the develop branch code before a feature is accepted. In case a feature would not be accepted after testing but we would like to release other features already merged on develop that would be hell. Develop is a branch from which a release is made and t...