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Storing SHA1 hash values in MySQL
...r performance reasons.
In my case the sha1 column is an email confirmation token, so on the landing page the query enters only with the token.
In this case CHAR(40) with INDEX, in my opinion, is the best choice :)
If you want to adopt this method, remember to leave $raw_output = false.
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Differences between std::make_unique and std::unique_ptr with new
...untime efficiency the way using make_shared does (due to avoiding a second allocation, at the cost of potentially higher peak memory usage).
* It is expected that C++17 will include a rule change that means that this is no longer unsafe. See C++ committee papers P0400R0 and P0145R3.
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How to port data-only volumes from one host to another?
...-server on a machine you want to copy data from (You'll need the NGROK_AUTHTOKEN which can be obtained from ngrok dashboard):
$ docker run --rm -e NGROK_AUTHTOKEN="$NGROK_AUTHTOKEN" \
--mount source=MY_VOLUME,target=/data,readonly \
quay.io/suda/dvsync-server
Then you can start the dvsync-cli...
Programmatically add custom event in the iPhone Calendar
... {
[super viewDidLoad];
EKEventStore *eventStore = [[EKEventStore alloc] init];
EKEvent *event = [EKEvent eventWithEventStore:eventStore];
event.title = @"EVENT TITLE";
event.startDate = [[NSDate alloc] init];
event.endDate = [[NSDate alloc] initWithTimeInterval:600...
How do I clear the std::queue efficiently?
...uivalent. Since there is no transfer of ownership in the assignment of the allocated memory some containers (like vector) might just call the destructors of the previously held elements and set the size (or equivalent operation with the stored pointers) without actually releasing the memory.
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Is there a best practice for generating html with javascript
...nce seen in the first method is likely because the result string must be reallocated 200 times, and memory allocations can be slow. After two iterations you have "testingtesting". After three iterations, that string is thrown away and memory with enough room for "testingtestingtesting" is allocate...
Quickly create large file on a Windows system
...oftware/rdfc/index-en.html
RDFC is probably not the fastest, but it does allocate data blocks. The absolutely fastest would have to use lower level API to just obtain cluster chains and put them into MFT without writing data.
Beware that there's no silver bullet here - if "creation" returns insta...
What is the memory consumption of an object in Java?
... tell you, so long as the program gives the same answers.
It might allocate some temporary Objects on the stack.
It may optimize some variables or method calls totally out of existence replacing them with constants.
It might version methods or loops, i.e. compile two versions of a meth...
How to get past the login page with Wget?
...u can set multiple cookies at the same time also, --header "Cookie: access_token=IKVYJ;XSRF-TOKEN=5e10521d"
– Phil C
May 25 '18 at 13:28
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How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...oduce this is beyond the scope of this answer but the TL;DR is that secret_token.rb conflates configuration and code as well as being a security risk since the token is checked into source control history and the only system that needs to know the production secret token is the production infrastruc...