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How to check if a string contains text from an array of substrings in JavaScript?
...wer to a slightly different question, which asks if a string contains text from an array of substrings. This code checks if a string is one of the substrings. Depends on what is meant by "contains" I suppose.
– fcrick
May 29 '18 at 19:07
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What happens if you call erase() on a map element while iterating from begin to end?
...C++03
Erasing elements in a map does not invalidate any iterators.
(apart from iterators on the element that was deleted)
Actually inserting or deleting does not invalidate any of the iterators:
Also see this answer:
Mark Ransom Technique
But you do need to update your code:
In your code you i...
Convert SQLITE SQL dump file to POSTGRESQL
...le.sql
If you want the id column to "auto increment" then change its type from "int" to "serial" in the table creation line. PostgreSQL will then attach a sequence to that column so that INSERTs with NULL ids will be automatically assigned the next available value. PostgreSQL will also not recogniz...
How to disable all caps menu titles in Visual Studio
...have written an extension which will do this for you.
You can download it from the Visual Studio Gallery:
VSCommands for Visual Studio 2012
VSCommands for Visual Studio 2013
It can also hide main menu altogether and have it appear only on mouse over or alt key press (like in IE)
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Mutex example / tutorial? [closed]
...std::lock_guard if you want to be exception safe
int i = 0;
void makeACallFromPhoneBooth()
{
m.lock();//man gets a hold of the phone booth door and locks it. The other men wait outside
//man happily talks to his wife from now....
std::cout << i << " Hello Wife" <<...
Check if a value is an object in JavaScript
...er all there's no recipe at all!) for checking whether it's an object, far from it. Since people tend to look for something to copy from here without doing any research, I'd highly recommend that they turn to the other, most upvoted (and correct!) answer.
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How to set the prototype of a JavaScript object that has already been instantiated?
...ossible to do: the designation of an objects prototype at runtime separate from its constructor. This is an important use case and is one of the primary reasons __proto__ isn't already dead. It's important enough that it's been a serious discussion point in the formulation of Harmony, or soon to be ...
Are tuples more efficient than lists in Python?
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Although the suggestion you can conclude anything from counting ops is misguided, this does show the key difference: constant tuples are stored as such in the bytecode and just referenced when used, whereas lists need to be built at runtime.
– poolie
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HTTP requests and JSON parsing in Python
...he Google Directions API. As an example, this request calculates the route from Chicago, IL to Los Angeles, CA via two waypoints in Joplin, MO and Oklahoma City, OK:
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Why is processing a sorted array slower than an unsorted array?
...r perform very nicely. They have great locality of reference.
The penalty from cache misses outweighs the saved branch prediction penalty in this case.
Try switching to a struct-tuple. This will restore performance because no pointer-dereference needs to occur at runtime to access tuple members.
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