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Calculate difference between two datetimes in MySQL
...imilar kind of functionality. For example there is one table say REQUESTS (id, message, timestamp). timestamp while storing will be NOW() . while i run a query, select * from requests, instead of displaying that value it should display id, message and how much time back request was posted.
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How to use range-based for() loop with std::map?
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In C++17 this is called structured bindings, which allows for the following:
std::map< foo, bar > testing = { /*...blah...*/ };
for ( const auto& [ k, v ] : testing )
{
std::cout << k << "=" << v << "\n";
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Why does Convert.ToString(null) return a different value if you cast null?
...tring. The answer for other searchers is (string)null, or if you object is called o, then (string)o
– rayzinnz
Feb 23 '18 at 3:37
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Initializing a struct to 0
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So, yes both of them work. Note that in C99 a new way of initialization, called designated initialization can be used too:
myStruct _m1 = {.c2 = 0, .c1 = 1};
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IIS: Idle Timeout vs Recycle
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I have inherited a desktop app that makes calls to a series of Web Services on IIS. The web services (also) have to be able to run timed processes, independently (without having the client on). Hence they all have timers.
The web service timers were shutting down (m...
Provisioning Profiles menu item missing from Xcode 5
...appened. I restarted the computer, tried some things, but I really have no idea what I could do. How can I fix this problem?
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Using Kafka as a (CQRS) Eventstore. Good idea?
... with using Kafka for event sourcing is the number of required topics. Typically in event sourcing, there is a stream (topic) of events per entity (such as user, product, etc). This way, the current state of an entity can be reconstituted by re-applying all events in the stream. Each Kafka topic con...
Using the slash character in Git branch name
...nd a directory with the same name.
You're trying to get git to do basically this:
% cd .git/refs/heads
% ls -l
total 0
-rw-rw-r-- 1 jhe jhe 41 2009-11-14 23:51 labs
-rw-rw-r-- 1 jhe jhe 41 2009-11-14 23:51 master
% mkdir labs
mkdir: cannot create directory 'labs': File exists
You're gett...
How to remove a file from version control without deleting it?
...tory. In the event you wish to remove files from the repo, BUT keep them locally on your machine then you'd use the flag above.
– Greg Hilston
Feb 22 '16 at 13:31
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How to define servlet filter order of execution using annotations in WAR
...ervlet filters in my project, out of them only a particular filter must be called first and order of other filters not a concern. Do I have to defile all filters in web.xml? Or are there any short-cuts?
– siva636
Jul 3 '11 at 7:40
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