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Identity increment is jumping in SQL Server database
... since SQL Server 2012.
It now by default uses a cache size of 1,000 when allocating IDENTITY values for an int column and restarting the service can "lose" unused values (The cache size is 10,000 for bigint/numeric).
This is mentioned in the documentation
SQL Server might cache identity valu...
node.js hash string?
...nt hash between Javascript (NodeJS) and other langage/service like Python, PHP, Github...
If you don't use this code, you can get a different hash between NodeJS and Python...
How to get the same hash that Python, PHP, Perl, Github (and prevent an issue) :
NodeJS is hashing the UTF-8 representation...
Mix Razor and Javascript code
...
It returns Uncaught SyntaxError: Unexpected token & because the model becomes something like this [{"Id":1,"Name":"Name}]
– Weihui Guo
Feb 4 '19 at 15:33
...
What does MVW stand for?
...as the point is to understand the concepts from the terms, but by the same token, fully understanding the terms helps one when they are designing their application code, knowing what goes where and why.
share
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What is the difference between window, screen, and document in Javascript?
...at about the document object then? The document object is your html, aspx, php, or other document that will be loaded into the browser. The document actually gets loaded inside the window object and has properties available to it like title, URL, cookie, etc. What does this really mean? That means i...
What is JavaScript garbage collection?
...ier
post.)
At this point we know that all the
memory still marked is allocated
memory which cannot be reached by any
path from any in-scope variable. All
of those objects are instructed to
tear themselves down, which destroys
any circular references.
The main purpose of garbage...
What is the difference between the | and || or operators?
I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: | . What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable?
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Read whole ASCII file into C++ std::string [duplicate]
...lts.
Following KeithB's point in the comments, here's a way to do it that allocates all the memory up front (rather than relying on the string class's automatic reallocation):
#include <string>
#include <fstream>
#include <streambuf>
std::ifstream t("file.txt");
std::string str;...
capturing self strongly in this block is likely to lead to a retain cycle
...RING YOU TO RETAIN LOOP
}
};
and don't forget to do:
- (void)dealloc {
self.loadingCompletionHandler = NULL;
}
another issue can appear if you will pass weak copy of not retained by anybody object:
MyViewController *vcToGo = [[MyViewCOntroller alloc] init];
__weak MyViewController...
What is a “cache-friendly” code?
...ilar processors. In some cases, however, it can be worth doing things like allocating a large buffer, and then using only parts of what you allocated to ensure against data sharing the same cache lines (even though you'll probably need to detect the exact processor and act accordingly to do this).
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