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Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...ression<Func<string>> f){}
string M(int x) { ... }
...
int y = 123;
Q(()=>M(y++));
An increment operation is illegal in an expression tree. However, the lambda is still convertible to the expression tree type, even though if the conversion is ever used, it is an error! The principle...
Seeking clarification on apparent contradictions regarding weakly typed languages
...f these things at the same time. So you can, for example, write:
$foo = "123" + "456"; # $foo = 579
$bar = substr($foo, 2, 1); # $bar = 9
$bar .= " lives"; # $bar = "9 lives"
$foo -= $bar; # $foo = 579 - 9 = 570
Of course, as you correctly note, all...
Which timestamp type should I choose in a PostgreSQL database?
...ute a bit more.
Absolute time is used to record an event. Examples: "User 123 logged in" or "a graduation ceremonies start at 2011-05-28 2pm PST." Regardless of your local time zone, if you could teleport to where the event occurred, you could witness the event happening. Most time data in a databa...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
... 隐私策略和使用条款 技术支持 service@fun123.cn
What is 'Context' on Android?
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123
A Context is a handle to the system; it provides services like resolving resources, obtaining ...
Colors in JavaScript console
...36px 121px hsl(653.4, 100%, 50%), -38px 122px hsl(658.8, 100%, 50%), -39px 123px hsl(664.2, 100%, 50%), -41px 124px hsl(669.6, 100%, 50%), -42px 125px hsl(675, 100%, 50%), -43px 126px hsl(680.4, 100%, 50%), -45px 127px hsl(685.8, 100%, 50%), -46px 128px hsl(691.2, 100%, 50%), -47px 129px hsl(696.6, ...
What are the differences between Generics in C# and Java… and Templates in C++? [closed]
...e from this situation, consider the following code:
Y<int>::my_type(123);
This code statement is perfectly valid and tells C++ to execute the function call to Y<int>::my_type. However, if my_type is not a function but rather a type, this statement would still be valid and perform a sp...
For-each over an array in JavaScript
...
123
Loop backwards
I think the reverse for loop deserves a mention here:
for (var i = array.leng...
What is a reasonable code coverage % for unit tests (and why)? [closed]
...
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insert vs emplace vs operator[] in c++ map
...will overwrite the previous value if one exists.
– dk123
Sep 30 '13 at 9:47
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