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Why use symbols as hash keys in Ruby?
...ven't done any benchmark yet, but I guess it would be close the symbols performance.
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When to use RDLC over RDL reports?
... 'ReportViewer' in a client application written in ASP.NET, WPF (with a winform control bleh!), or Winforms in .NET using 'ProcessingMode.Remote'.
You can set parameters a user can see and use to gain more flexibility.
You can configure parts of a report to be used for connection strings as 'Data So...
What is the difference between .text, .value, and .value2?
...) or boolean)
.Value gives you the same as .Value2 except if the cell was formatted as currency or date it gives you a VBA currency (which may truncate decimal places) or VBA date.
Using .Value or .Text is usually a bad idea because you may not get the real value from the cell, and they are slower...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
In the Mac and iOS platforms, memory leaks are often caused by unreleased pointers. Traditionally, it has always been of utmost importance to check your allocs, copies and retains to make sure each has a corresponding release message.
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Why does find -exec mv {} ./target/ + not work?
...dn't run it manually, I did it from the top of my head and rarely use that form of regex searching with find. It was just a 'might help' type thing.
– Mike Ramirez
Apr 9 '11 at 21:02
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Is Using .NET 4.0 Tuples in my C# Code a Poor Design Decision?
...tuple - however, they are strongly typed and allow you to specify clear, informative names for the properties belonging to the type. But anonymous types are difficult to use across different methods - they were primarily added to support technologies like LINQ where projections would produce types t...
vs
...e.h>
And further,
2 Every C header, each of which has a name of the form name.h, behaves as if each name placed in the standard library namespace by the corresponding cname header is placed within the global namespace scope. It is unspecified whether these names are first declared or defined ...
Async/await vs BackgroundWorker
...w:
BackgroundWorker is meant to model a single task that you'd want to perform in the background, on a thread pool thread. async/await is a syntax for asynchronously awaiting on asynchronous operations. Those operations may or may not use a thread pool thread or even use any other thread. So, th...
How do you know when to use fold-left and when to use fold-right?
...like a list iteration, one that would be simple to write in tail-recursive form, foldl is the way to go.
But really this will be probably be most evident from the associativity of the operators you are using. If they are left-associative, use foldl. If they are right-associative, use foldr.
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Elastic search, multiple indexes vs one index and types for different data sets?
...ill incur more storage with each additional shard being created and the performance gain is marginal.
Recommended if your data set is big and your queries are taking a long time to process, since dedicated shards are storing your specific data and it will be easier for Elasticsearch to process.
Im...