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JavaScript: Passing parameters to a callback function
...e callback function
//only when we have some missing value
//get this data from ajax or compute
var extraParam = "this data was missing" ;
//call the callback when we have the data
callback(extraParam);
}
// test function
callbackTester (function(k) {
tryMe("hello", "goodbye", k);
});
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Split by comma and strip whitespace in Python
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The original was copy-pasted from a REPL (if I remember correctly) and the goal was understanding of the underlying concept (using list comprehension to perform an operation) - but you're right, it makes more sense if you see that list comprehension prod...
Why should I use IHttpActionResult instead of HttpResponseMessage?
...method of the base class ApiController that your controller should inherit from.
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How does Python manage int and long?
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From python 3.x, the unified integer libries are even more smarter than older versions. On my (i7 Ubuntu) box I got the following,
>>> type(math.factorial(30))
<class 'int'>
For implementation details refer ...
Read and parse a Json File in C#
...you have a StreamReader anyway, it would be better to deserialize directly from the stream using JsonTextReader as shown in Can Json.NET serialize / deserialize to / from a stream?. The r.ReadToEnd() is not needed.
– dbc
Jun 11 '19 at 19:05
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What is the difference between MOV and LEA?
...spect; Load is just how you replace the value in a register with something from scratch. e.g. LAHF is: Load FLAGS into AH register. In the CLR's CIL (which is a higher level stack based abstract machine, the term load refers to putting a value onto the notional stack and is normally l..., and the s....
Array versus List: When to use which?
...tually no collections are ever mutated. That is; collections are retrieved from the database or constructed from some source, but further processing is always done by recreating a new collection (e.g. map/filter etc). Even where conceptual mutation is necessary, it tends to be simplest to just gener...
How to Sign an Already Compiled Apk
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Automated Process:
Use this tool (uses the new apksigner from Google):
https://github.com/patrickfav/uber-apk-signer
Disclaimer: Im the developer :)
Manual Process:
Step 1: Generate Keystore (only once)
You need to generate a keystore once and use it to sign your unsigned apk...
How to get error message when ifstream open fails
...owing on @Arne Mertz's answer, as of C++11 std::ios_base::failure inherits from system_error (see http://www.cplusplus.com/reference/ios/ios_base/failure/), which contains both the error code and message that strerror(errno) would return.
std::ifstream f;
// Set exceptions to be thrown on failure
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How to capitalize the first letter in a String in Ruby
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Use capitalize. From the String documentation:
Returns a copy of str with the first character converted to uppercase and the remainder to lowercase.
"hello".capitalize #=> "Hello"
"HELLO".capitalize #=> "Hello"
"123ABC".c...