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MySQL: Transactions vs Locking Tables
...posit all the service fees charged on the transaction. Given (as everyone knows these days) that banks are extraordinarily stupid, let's say their system works like this:
$balance = "GET BALANCE FROM your ACCOUNT";
if ($balance < $amount_being_paid) {
charge_huge_overdraft_fees();
}
$balance...
Move existing, uncommitted work to a new branch in Git
... you have been making commits on your main branch while you coded, but you now want to move those commits to a different branch, this is a quick way:
Copy your current history onto a new branch, bringing along any uncommitted changes too:
git checkout -b <new-feature-branch>
Now force the ...
This app won't run unless you update Google Play Services (via Bazaar)
...nt.
(The comment is from Zhelyazko Atanasov yesterday at 23:18, I don't know how to link directly to it)
Also, you don't see the "(via Bazaar)" part when running from an actual device, and the update button open the Play Store. I am assuming Bazaar is meant to provide Google Play Services on the ...
How do I install ASP.NET MVC 5 in Visual Studio 2012?
...udio 2012 Express for Web.
You can download and start using these features now.
The download link is to a Web Platform Installer that will allow you to start a new MVC5 project from VS2012.
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Asynchronous method call in Python?
...the execution in some queue, or/and call a callback. Otherwise you do not know when it's done (if at all).
– Drakosha
Jun 5 '14 at 22:10
1
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scheduleAtFixedRate vs scheduleWithFixedDelay
... executor.shutdown()
} else {
Thread.sleep(2000L)
val now = System.currentTimeMillis()
time += now - start
System.out.println("Total $time delay ${now - start}\n")
start = now
}
}, 0L, 1000L, TimeUnit.MILLISECONDS)
And see the results:
| scheduleWi...
How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?
...ally inherit A. D's object size is increased because it stores 2 pointers now; however there is only one A now.
So B::A and C::A are the same and so there can be no ambiguous calls from D. If you don't use virtual inheritance you have the second diagram above. And any call to a member of A the...
Are there legitimate uses for JavaScript's “with” statement?
...e feature, and had never given much thought to how it might cause trouble. Now, I'm curious as to how I might make effective use of with , while avoiding its pitfalls.
...
Xcode warning: “Multiple build commands for output file”
...t. (it's better to make a backup of your project file before deleting it)
Now build the project again. The warning should disappear now.
(this answer is for a previous version of xcode)
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imp...
Python try-else
... print('if this prints, we had no error!') # won't print!
print('And now we have left the try block!') # will print!
And now,
>>> handle_error()
handled a RuntimeError, no big deal.
And now we have left the try block!
...