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Using reCAPTCHA on localhost
...accurate, but there's an important caveat that stumped me: When migrating from reCAPTCHA v1 to v2, it is necessary to regenerate the API keys in order for this message to disappear. Further, and equally important, if you're like me and you setup test domains in your local/development environment b...
Understanding Linux /proc/id/maps
... changed using the mprotect system call.
offset - If the region was mapped from a file (using mmap), this is the offset in the file where the mapping begins. If the memory was not mapped from a file, it's just 0.
device - If the region was mapped from a file, this is the major and minor device numbe...
When should I use the new keyword in C++?
...s) you shouldn't use new.
If you'd like to return a pointer to your object from a function, you must use new
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Split array into chunks
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The array.slice method can extract a slice from the beginning, middle, or end of an array for whatever purposes you require, without changing the original array.
var i,j,temparray,chunk = 10;
for (i=0,j=array.length; i<j; i+=chunk) {
temparray = array.slice(i,...
How to send a GET request from PHP?
...ing to use PHP for a simple requirement. I need to download a XML content from a URL, for which I need to send HTTP GET request to that URL.
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Solr vs. ElasticSearch [closed]
...ch provides an insightful analysis/comparison and explains why he switched from Solr to ElasticSeach, despite being a happy Solr user already - he summarizes this as follows:
Solr may be the weapon of choice when building standard search
applications, but Elasticsearch takes it to the next...
Find object by id in an array of JavaScript objects
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Use the find() method:
myArray.find(x => x.id === '45').foo;
From MDN:
The find() method returns the first value in the array, if an element in the array satisfies the provided testing function. Otherwise undefined is returned.
If you want to find its index instead, use findInd...
Getting the difference between two sets
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Try this
test2.removeAll(test1);
Set#removeAll
Removes from this set all of its elements that are contained in the specified collection (optional operation). If the specified collection is also a set, this operation effectively modifies this set so that its value is the asymmetri...
Why is there “data” and “newtype” in Haskell? [duplicate]
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From application point of view, since newtype is a new name of an existing type, it is used to implement multiple instances of a class for that same underlying type. Now compiler won't complain if you attempt to define instan...
How do I trim whitespace?
Is there a Python function that will trim whitespace (spaces and tabs) from a string?
15 Answers
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