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How do ACID and database transactions work?
...l ever be violated.
Isolation means that one transaction cannot read data from another transaction that is not yet completed. If two transactions are executing concurrently, each one will see the world as if they were executing sequentially, and if one needs to read data that is written by another,...
Differences between TCP sockets and web sockets, one more time [duplicate]
...
When you send bytes from a buffer with a normal TCP socket, the send function returns the number of bytes of the buffer that were sent. If it is a non-blocking socket or a non-blocking send then the number of bytes sent may be less than the size...
What does 'const static' mean in C and C++?
...er forums. My best guess is that it's used in C to hide the constant foo from other modules. Is this correct? If so, why would anyone use it in a C++ context where you can just make it private ?
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What methods of ‘clearfix’ can I use?
...pose!
Thierry also offers: "A word of caution: if you start a new project from scratch, go for it, but don’t swap this technique with the one you have now, because even though you do not support oldIE, your existing rules prevent collapsing margins."
Micro Clearfix
The most recent and globall...
No route matches “/users/sign_out” devise rails 3
... I did the test and it works for me. Don't forget that things change from one version to another (be it in Rails or Devise). Besides, logging out is state-changing behaviour which should not be done using GET methods (in my humble opinion).
– Jessie Dedecker
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Is SonarQube Replacement for Checkstyle, PMD, FindBugs?
We are working on a web project from scratch and are looking at the following static code analysis tools.
8 Answers
...
git: Switch branch and ignore any changes without committing
... switching branches, proceed even if the index or the working tree differs from HEAD. This is used to throw away local changes. )
Or, more recently:
With Git 2.23 (August 2019) and the new command git switch:
git switch -f <branch-name>
(-f is short for --force, which is an alias for --dis...
How can I get the timezone name in JavaScript?
...ability to detect something like "America/New York." Is that even possible from JavaScript or is that something I am going to have to guestimate based on the offset?
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Handling specific errors in JavaScript (think exceptions)
...
To create custom exceptions, you can inherit from the Error object:
function SpecificError () {
}
SpecificError.prototype = new Error();
// ...
try {
throw new SpecificError;
} catch (e) {
if (e instanceof SpecificError) {
// specific error
} else {
thr...
Can you build dynamic libraries for iOS and load them at runtime?
...u to open the library by passing in the path to that framework, or dylib. From some docs for building jailbreak apps, here's an example of calling an init() function implemented inside your own, separate dylib:
#include <dlfcn.h>
initWrapper() {
char *dylibPath = "/Applications/myapp.ap...