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How do you get a string to a character array in JavaScript?
...low
surrogates.
const a = '????????????????'.split(/(?=(?:[\0-\uD7FF\uE000-\uFFFF]|[\uD800-\uDBFF][\uDC00-\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]))/);
console.log(a);
Reduce method (already answered by Mark Amery)
const s = '????????????????';
c...
How do I open an old MVC project in Visual Studio 2012 or Visual Studio 2013?
...ds>
{F85E285D-A4E0-4152-9332-AB1D724D3325};{349c5851-65df-11da-9384-00065b846f21};{fae04ec0-301f-11d3-bf4b-00c04f79efbc}
</ProjectTypeGuids>
Remove the appropriate Project Guid from the list:
ASP.NET MVC 1: {603c0e0b-db56-11dc-be95-000d561079b0}
ASP.NET MVC 2: {F85E285D-A4E0-4152-93...
Sql query to insert datetime in SQL Server
...eed work in all SQL languages in sys.syslanguages:
declare @sql nvarchar(4000)
declare @LangID smallint
declare @Alias sysname
declare @MaxLangID smallint
select @MaxLangID = max(langid) from sys.syslanguages
set @LangID = 0
while @LangID <= @MaxLangID
begin
select @Alias = alias
fr...
Modifying a subset of rows in a pandas dataframe
..., use NumPy's where function.
Setup
Create a two-column DataFrame with 100,000 rows with some zeros.
df = pd.DataFrame(np.random.randint(0,3, (100000,2)), columns=list('ab'))
Fast solution with numpy.where
df['b'] = np.where(df.a.values == 0, np.nan, df.b.values)
Timings
%timeit df['b'] = np.where...
windbg 备忘 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...存器
!process 0 0 calc.exe
!process 0 0 system
!process pid
.formats 000ab048
!dd
!pte
!ptov
!vtop
!pfn
~s
dg
!pcr
dv 显示变量值
源代码操作指令
.open，lsf，lsc，ls，l，lsp
Ctrl+O打开并查看源文件
windbg源代码不能跟踪当前指令行时，reload ima...
Edit line thickness of CSS 'underline' attribute
...on:absolute;
left:0;
bottom:0;
right:0;
margin:auto;
background:#000;
height:1px;
}
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What is the size limit of a post request?
...ting: max_input_vars which in my version of PHP: 5.4.16 defaults to 1000. From the manual: "How many input variables may be accepted (limit is applied to $_GET, $_POST and $_COOKIE superglobal separately)" Ref.: php.net/manual/en/info.configuration.php#ini.max-input-vars
...
Easier way to create circle div than using an image?
...idth: 50px;
height: 50px;
background: #ccc;
border: 3px solid #000;
}
.type3 {
width: 500px;
height: 500px;
background: aqua;
border: 30px solid blue;
}
HTML:
<div class="circleBase type1"></div>
<div class="circleBase type2"></div><div clas...
in_array() and multidimensional array
...ran the code but it has an error - Parse error: parse error in C:\wamp\www\000_TEST\php\php.in_array\index.php on line 21 - which is if(in_array("Irix", $value) thanks.
– laukok
Nov 8 '10 at 21:51
...
How to get last key in an array?
...y(array_slice($array, -1, 1, true));
As the tests say, on an array with 500000 elements, it is almost 7x faster!
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