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When would anyone use a union? Is it a remnant from the C-only days?
...As the authors of a recommendation for the ISO C++ Standard put it back in 2008,
Many important problem domains require either large numbers of objects or limited memory
resources. In these situations conserving space is very important, and a union is often a perfect way to do that. In fact, a...
How to handle dependency injection in a WPF/MVVM application
...compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DataContext="{d:DesignInstance Type=local:MyViewModel, IsDesignTimeCreatable=True}"
The view-model type should have two constructors, the default for design-time data and another for dependency inje...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
... (for SQL Server 2005, which is version 9.0), most are 100 (for SQL Server 2008, version 10.0), and a small set has 140 (for SQL Server 2017, version 14.0).
I said "for the most part" because the collations ending in _SC were introduced in SQL Server 2012 (version 11.0), but the underlying data was...
内存管理内幕：动态分配的选择、折衷和实现 - C/C++ - 清泛网 - 专注C/C++及内核技术
...都获得了自己可以使用的地址空间，可以访问比您物理上安装的内存更多的内存。
在 32-位 x86 系统上，每一个进程可以访问 4 GB 内存。现在，大部分人的系统上并没有 4 GB 内存， 即使您将 swap 也算上， 每个进程所使用的内存...
Filter rows which contain a certain string
...tat-computing.org/dataexpo/2009/the-data.html
df <- read_csv("Downloads/2008.csv")
print(dim(df))
# [1] 7009728 29
benchmark(
"str_detect" = {df %>% filter(str_detect(Dest, 'MCO|BWI'))},
"grepl" = {df %>% filter(grepl('MCO|BWI', Dest))},
replications = 10,
columns = c("test", ...
What is the real overhead of try/catch in C#?
...for "exceptional behaviour" or conditions: blogs.msdn.com/kcwalina/archive/2008/07/17/…
– HTTP 410
Oct 24 '08 at 16:56
2
...
Real life example, when to use OUTER / CROSS APPLY in SQL
...oo2 INT, Foo3 INT,
Bar1 INT, Bar2 INT, Bar3 INT
);
Example using 2008+ VALUES syntax.
SELECT Id,
Foo,
Bar
FROM T
CROSS APPLY (VALUES(Foo1, Bar1),
(Foo2, Bar2),
(Foo3, Bar3)) V(Foo, Bar);
In 2005 UNION ALL can be...
Multiple INSERT statements vs. single INSERT with multiple VALUES
... at this in a debugger but the public symbols for my version of SQL Server 2008 don't seem to be available so instead I had to look at the equivalent UNION ALL construction in SQL Server 2005.
A typical stack trace is below
sqlservr.exe!FastDBCSToUnicode() + 0xac bytes
sqlservr.exe!nls_sqlhilo(...
Should CSS always preceed Javascript?
.... Since speculative rendering was implemented in WebKit 525 (released Mar 2008), and just about every worthwhile mobile browser is based on WebKit, we can conclude that "most" mobile browsers should support it. According to quirksmode, iOS 2.2/Android 1.0 use WebKit 525. I have no idea what Windo...
ServiceStack vs ASP.Net Web API [closed]
...benefits of its message-based design.
ServiceStack has been around since 2008 as an OSS-run project from its inception with a single goal of promoting the correct design and implementation of friction-free remote services.
Simple and Elegant Design
In its pursuit for ultimate simplicity, it's b...