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Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
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Good, it works. But it's not working for an array of vectors: for e.g: vector<int> A[n];
– ABcDexter
Dec 28 '14 at 7:51
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Algorithm to find Largest prime factor of a number
...ethod which is very fast if the input number has two factors very close to its square root is known as Fermat factorisation. It makes use of the identity N = (a + b)(a - b) = a^2 - b^2 and is easy to understand and implement. Unfortunately it's not very fast in general.
The best known method for fa...
if A vs if A is not None:
...uivalents 0 or 1. When this method is not defined, __len__() is called, if it is defined, and the object is considered true if its result is nonzero. If a class defines neither __len__() nor __nonzero__(), all its instances are considered true.
On the other hand,
if A is not None:
compares only...
How do I check whether a file exists without exceptions?
How do I check if a file exists or not, without using the try statement?
39 Answers
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How to concatenate items in a list to a single string?
Is there a simpler way to concatenate string items in a list into a single string? Can I use the str.join() function?
11...
How do I remove an array item in TypeScript?
I have an array that I've created in TypeScript and it has a property that I use as a key. If I have that key, how can I remove an item from it?
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Comparison of JSON Parser for Objective-C (JSON Framework, YAJL, TouchJSON, etc)
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If you're looking for speed, take a look at JSONKit. It is (usually) much faster than the already mentioned JSON libraries, often an order of magnitude faster. And because of it's "recently instantiated object cache", it will (again, usually) use less memory as well.
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Why is sed not recognizing \t as a tab?
...ed script to insert a tab in front of every line in $filename however it is not. For some reason it is inserting a t instead.
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What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?
...t:
If is a local tar archive in a recognized compression format (identity, gzip, bzip2 or xz) then it is unpacked as a directory. Resources from remote URLs are not decompressed.
Note that the Best practices for writing Dockerfiles suggests using COPY where the magic of ADD is not required. ...
Need to log asp.net webapi 2 request and response body to a database
... {
// log request body
string requestBody = await request.Content.ReadAsStringAsync();
Trace.WriteLine(requestBody);
}
// let other handlers process the request
var result = await base.SendAsync(request, cancellationToken);
if ...