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Spring @Transactional - isolation, propagation
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rollback |
v v
value (x) is now dirty (incorrect)
So a sane default (if such can be claimed) could be Read Committed, which only lets you read values which have already been committed by other running transactions, in combination with a propagation le...
Why does C++ need a separate header file?
...against don't even need to have been written yet, never mind the compiler knowing what .cpp file they'll be in. Everything the calling code needs to know at compile time is expressed in the function declaration. At link time you will provide a list of .o files, or static or dynamic libraries, and th...
Draw radius around a point in Google map
I'm using the Google Maps API and have added markers. Now I want to add a 10 mile radius around each marker, meaning a circle that behaves appropriately while zooming. I have no idea how to do that and it seems it's not something common.
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Why is address zero used for the null pointer?
... In the days when C was first developed, memory was MUCH more costly than now. The number zero can be conveniently calculated using an XOR instruction or without the need to load an immediate value. Depending upon the architecture, this could potentially save space.
– Sparky...
Git: How to edit/reword a merge commit's message?
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--preserve-merges is now --rebase-merges
– OrangeDog
Jun 27 '19 at 9:40
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Background image jumps when address bar hides iOS/Android/Mobile Chrome
... Thanks for this. I'll give it a whirl tomorrow and let you know how I get on :)
– Dave Clarke
Jul 31 '14 at 1:12
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How do I share IntelliJ Run/Debug configurations between projects?
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This rules, its exactly what I wanted to know, because indeed we were ignoring .idea and there was no way to unignore it without big headaches.
– David Mann
Jan 29 '19 at 21:56
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How do API Keys and Secret Keys work? Would it be secure if I have to pass my API and secret keys to
...the result is greater than ten, subtracts ten. So f(2) = 5, f(8) = 1, etc. Now, we can make another function, call it f', that goes backwards, by adding seven instead of three. f'(5) = 2, f'(1) = 8, etc.
That's an example of a two-way function and its inverse. Theoretically, any mathematical functi...
How can I style an Android Switch?
...olors and shape a bit for branding reasons. How does one go about this? I know it must be possible, as ive seen the difference between default ICS and Samsung's touchwiz theme
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JavaScript inheritance: Object.create vs new
... objects from this
var myObject = Object.create( base );
// myObject will now link to "base" via the prototype chain internally
So this is another concept, a more "object oriented" way of inherting. There is no "constructor function" out of the box using Object.create() for instance. But of cours...