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C# List of objects, how do I get the sum of a property
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for(int i = 0; i < f; ++i)
{
p[i] = i % 2;
}
var time = DateTime.Now;
p.Sum();
Console.WriteLine(DateTime.Now - time);
int x = 0;
time = DateTime.Now;
foreach(var item in p){
x += item;
}
Console.WriteLine(DateTime.Now - time);
x = 0;
time = DateTime.Now;
for(int i = 0, j = f; i < ...
Where is Vagrant saving changes to the VM?
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I was wondering if @pyfunc and other users here could help me with using vagrant on an existing VM that is not created using vagrant up in the first place. stackoverflow.com/q/14503932/80353
– Kim Stacks
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Extracting Nupkg files using command line
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You can also use the NuGet command line, by specifying a local host as part of an install. For example if your package is stored in the current directory
nuget install MyPackage -Source %cd% -OutputDirectory packages
will unpack it into the target directory.
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Why would you ever implement finalize()?
... it needs to be called.
Implement finalize() to do the close() processing if you detect it hasn't been done. Maybe with something dumped to stderr to point out that you're cleaning up after a buggy caller.
It provides extra safety in an exceptional/buggy situation. Not every caller is going to do...
Swift performSelector:withObject:afterDelay: is unavailable [duplicate]
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Swift 4
DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
// your function here
}
Swift 3
DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(0.1)) {
// your function here
}
Swift 2
let dispatchTime: dispatch_time_t = dispatch_time(DISPATCH_TIME_NO...
Best practices for catching and re-throwing .NET exceptions
...tion object's InnerException and stack trace are preserved. Is there a difference between the following code blocks in the way they handle this?
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Eclipse: Can you format code on save?
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@PéterVarga if you're using PyDev, check this
– grisaitis
Jun 29 '12 at 18:42
1
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HTML 5 tag vs Flash video. What are the pros and cons?
...question was made over 9 years ago. It made sense then, it doesn't make it now. Flash is hard on its way out; <video> support is ubiquitous, including mobile devices. Almost anything that Flash could do, HTML can now do too. HTML won, Flash lost. If you're pondering on how to embed video in ...
How to prepend a string to a column value in MySQL?
... the CONCAT function to do that:
UPDATE tbl SET col=CONCAT('test',col);
If you want to get cleverer and only update columns which don't already have test prepended, try
UPDATE tbl SET col=CONCAT('test',col)
WHERE col NOT LIKE 'test%';
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PHP Multidimensional Array Searching (Find key by specific value)
... $field, $value)
{
foreach($products as $key => $product)
{
if ( $product[$field] === $value )
return $key;
}
return false;
}
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