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What are the differences between a multidimensional array and an array of arrays in C#?
...3.691 14.695 14.398 14.551 14.252
25.782 27.484 25.711 20.844 19.607 20.349 25.861 26.214 19.677 20.171
5.050 5.085 6.412 5.225 5.100 5.751 6.650 5.222 6.770 5.305
The first row are timings of jagged arrays, the second shows multidimensional arrays and the third...
FFmpeg: How to split video efficiently?
...mmands SD 0m55.00
One command SD 0m52.26 #1 wins
Two commands SD 0m58.60 #2 wins
One command SD 0m58.61
Two commands SD 0m54.60
One command SD 0m50.51 #1 wins
Two commands SD 0m53.94
One command SD 0m49.63 #1 wins
Two commands SD 0m55.00
One command SD 0m52.26 #1 wins
Two c...
StringLength vs MaxLength attributes ASP.NET MVC with Entity Framework EF Code First
... public int StudentKey { get; set; }
//[MaxLength(50),StringLength(60)] //studentname column will be nvarchar(50)
//[StringLength(60)] //studentname column will be nvarchar(60)
[MaxLength(50)] //studentname column will be nvarchar(50)
public string StudentName { get; set; }...
Compare given date with today
...
time() - strtotime($var);
Gives you the seconds since $var
if((time()-(60*60*24)) < strtotime($var))
Will check if $var has been within the last day.
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...
List of ANSI color escape sequences
... ║
║ 60 ║ ideogram underline ║ hardly ever supported ║
║ 61 ║ ideogram double underline ║ hardly ever supported ...
如何建立一套适合自己的高胜算交易系统 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...特点外，也应有每个人个人的性格特点，对于即日交易(秒——小时)、短线(小时与天)、中线(周与月)、长线(月与年)不同交易方式的人(其中已含有个人的操作特点)也应有所不同，对于不同的市场(股票、期货、期权、价差交易、...
How Many Seconds Between Two Dates?
..., dt1)
{
var diff =(dt2.getTime() - dt1.getTime()) / 1000;
diff /= (60 * 60);
return Math.abs(Math.round(diff));
}
function diff_minutes(dt2, dt1)
{
var diff =(dt2.getTime() - dt1.getTime()) / 1000;
diff /= (60);
return Math.abs(Math.round(diff));
}
function diff_seconds(dt2...
LeanDB 拓展：LeanCloud数据库接入 · App Inventor 2 中文网
...询条件，减少出错率。
比如要查询“数学成绩大于等于 60 并且语文成绩小于等于 80”的学生记录，可以把条件表达式传给 ConditionJsonBuilder，再把返回的条件文本传给 Select，避免手动拼接 JSON。
是不是非常的精炼，更加的符合...
What data type to use for hashed password field and what length?
...hash = password_hash("rasmuslerdorf", PASSWORD_DEFAULT);
The result is a 60-character string similar to the following (but the digits will vary, because it generates a unique salt).
$2y$10$.vGA1O9wmRjrwAVXD98HNOgsNpDczlqm3Jq7KnEd1rVAGv3Fykk1a
Use the SQL data type CHAR(60) to store this encodin...
Fixed page header overlaps in-page anchors
...lass in CSS:
:target::before {
content: "";
display: block;
height: 60px; /* fixed header height*/
margin: -60px 0 0; /* negative fixed header height */
}
Or scroll the page relative to :target with jQuery:
var offset = $(':target').offset();
var scrollto = offset.top - 60; // minus fixe...