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Programmatically find the number of cores on a machine
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C++11
#include <thread>
//may return 0 when not able to detect
const auto processor_count = std::thread::hardware_concurrency();
Reference: std::thread::hardware_concurrency
In C++ prior to C++11, there's no portable way. Instead, you'll need to use one or...
What's a simple way to get a text input popup dialog box on an iPhone
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This renders an alertView like this (screenshot taken from the iPhone 5.0 simulator in XCode 4.2):
When pressing any buttons, the regular delegate methods will be called and you can extract the textInput there like so:
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger...
How can I tell if a DOM element is visible in the current viewport?
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answered Sep 24 '08 at 2:40
PrestaulPrestaul
73.5k1010 gold badges7575 silver badges8383 bronze badges
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How to set a default value with Html.TextBoxFor?
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you can try this
<%= Html.TextBoxFor(x => x.Age, new { @Value = "0"}) %>
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Check if element exists in jQuery [duplicate]
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answered Jan 4 '11 at 10:17
SarfrazSarfraz
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Get the closest number out of an array
I have a number from minus 1000 to plus 1000 and I have an array with numbers in it. Like this:
20 Answers
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Why does PEP-8 specify a maximum line length of 79 characters? [closed]
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130
Much of the value of PEP-8 is to stop people arguing about inconsequential formatting rules, and...
Check existence of input argument in a Bash shell script
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It is:
if [ $# -eq 0 ]
then
echo "No arguments supplied"
fi
The $# variable will tell you the number of input arguments the script was passed.
Or you can check if an argument is an empty string or not like:
if [ -z "$1" ]
then
echo...
How do I get the day of week given a date?
... import datetime
>>> datetime.datetime.today()
datetime.datetime(2012, 3, 23, 23, 24, 55, 173504)
>>> datetime.datetime.today().weekday()
4
From the documentation:
Return the day of the week as an integer, where Monday is 0 and Sunday is 6.
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C#: Printing all properties of an object [duplicate]
...ctually on your machine. Go to:
C:/Program Files/Microsoft Visual Studio 9.0/Samples/1033/CSharpSamples.zip
This will unzip to a folder called LinqSamples. In there, there's a project called ObjectDumper. Use that.
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