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How does “do something OR DIE()” work in PHP?
I'm writing a php app to access a MySQL database, and on a tutorial, it says something of the form
4 Answers
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What is sharding and why is it important?
...ean customers vs. American customers) then it may be possible to infer the appropriate shard membership easily and automatically, and query only the relevant shard.
Some more information about sharding:
Firstly, each database server is identical, having the same table structure. Secondly, the ...
In .NET, which loop runs faster, 'for' or 'foreach'?
...insignificant? That kind of a performance difference might matter for your application, and it might not, but I wouldn't just dismiss it out of hand.
– Robert Harvey
Dec 23 '09 at 0:04
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What is the difference between mutex and critical section?
...ronization primitive (like an event or semaphore).
I wrote a quick sample app that compares the time between the two of them. On my system for 1,000,000 uncontended acquires and releases, a mutex takes over one second. A critical section takes ~50 ms for 1,000,000 acquires.
Here's the test code,...
Call by name vs call by value in Scala, clarification needed
...(x: => Int) = {
println("x1=" + x)
println("x2=" + x)
}
Now what happens when we call them with our side-effecting function?
scala> callByValue(something())
calling something
x1=1
x2=1
scala> callByName(something())
calling something
x1=1
calling something
x2=1
So you can see that...
How to make a transparent HTML button?
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For me, I had to apply the property "cursor: pointer" to button:hover. With solely button it did not work.
– Spixmaster
Aug 14 at 9:58
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Django: multiple models in one template using forms [closed]
I'm building a support ticket tracking app and have a few models I'd like to create from one page. Tickets belong to a Customer via a ForeignKey. Notes belong to Tickets via a ForeignKey as well. I'd like to have the option of selecting a Customer (that's a whole separate project) OR creating a new ...
Cross-platform way of getting temp directory in Python
...ython 3.6.5 on Windows 10, tempfile.gettempdir() resolves to C:\users\user\AppData\Local\Temp. An unfortunately long path.
– solvingJ
Apr 25 '18 at 20:17
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what is the difference between sendStickyBroadcast and sendBroadcast in Android
...m/d/msg/android-developers/8341SaXhvmY/…. It is an old post but probably applies still
– Mr_and_Mrs_D
Nov 25 '13 at 14:27
1
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CSS - Overflow: Scroll; - Always show vertical scroll bar?
... or not.
The fix: In your css include -
::-webkit-scrollbar {
-webkit-appearance: none;
width: 7px;
}
::-webkit-scrollbar-thumb {
border-radius: 4px;
background-color: rgba(0, 0, 0, .5);
box-shadow: 0 0 1px rgba(255, 255, 255, .5);
}
/* always show scrollbars */
::-webkit-scro...