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How do I check if a number is a palindrome?
...t number system, being able to add will do (think how you commonly convert from decimal to binary - being used to think computation means binary doesn't mean you can't do, e.g., decimal arithmetic (and you can do conversion from binary to decimal without division or modulo 2).
–...
How to find out which processes are using swap space in Linux?
...not provide an exact answer to the problem as pointed out in the comments. From the htop FAQ:
It is not possible to get the exact size of used swap space of a
process. Top fakes this information by making SWAP = VIRT - RES, but
that is not a good metric, because other stuff such as video mem...
How to run Django's test database only in memory?
... it depends what you are testing. But I totally agree that, at the end and from time to time, you need to run the tests with your real database (Postgres, MySQL, Oracle...). But running your tests in-memory with sqlite can save you a lot of time.
– Etienne
Mar ...
How to pass parameters to the DbContext.Database.ExecuteSqlCommand method?
...but this mechanism allows for SQL injection and also prevents the database from reusing an execution plan when the statement shows up again but with different values.
– Greg Biles
Nov 4 '11 at 16:52
...
SSL Error: CERT_UNTRUSTED while using npm command
...below commands:
npm config set strict-ssl false
or set the registry URL from https or http like below:
npm config set registry="http://registry.npmjs.org/"
However, Personally I believe bypassing https is not the real solution, but we can use it as a workaround.
...
Does have to be in the of an HTML document?
...st not without needing to be enabled via a developer flag) and was removed from both the W3C and WhatWG specs "due to lack of implementer interest". Thereafter, style elements were only permitted in contexts that allow metadata content, which is only the head. Thus we were back to the same rules as ...
Dynamic constant assignment
...se case leading to this Ruby error is when you build the value in a method from other run-time assets (variables, command-line arguments, ENV), typically in a constructor e.g. def initialize(db,user,password) DB=Sequel.connect("postgres://#{user}:#{password}@localhost/#{db}") end. It's one of those ...
Receive JSON POST with PHP
...contents('php://input'), true);
print_r($data);
echo $data["operacion"];
From your json and your code, it looks like you have spelled the word operation correctly on your end, but it isn't in the json.
EDIT
Maybe also worth trying to echo the json string from php://input.
echo file_get_contents...
What is code coverage and how do YOU measure it?
...or each milestone. We have actually three code coverage metrics - coverage from unit tests (from the development team), scenario tests (from the test team) and combined coverage.
BTW, while code coverage is a good metric of how much testing you are doing, it is not necessarily a good metric of how ...
Implements vs extends: When to use? What's the difference?
...ns in your profile. If you understand the concept of multiple-inheritance from C++ (referring to classes that inherit characteristics from more than one other class), Java does not allow this, but it does have keyword interface, which is sort of like a pure virtual class in C++. As mentioned by lo...