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libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...和最后一个字节：bytes=0-0,-1
同时指定几个范围：bytes=500-600,601-999
CURLOPT_RESUME_FROM 传递一个long参数给libcurl，指定你希望开始传递的
偏移量。
2）curl_easy_perform 函数说明（error 状态码）
该函数完成curl_easy_setopt指定的所有选...
Position Absolute + Scrolling
...color: black;
top: 20px;
right: 50px;
height: 10px;
width: 600px;
z-index: 1000;
}
And in the HTML
<body>
<div id="mess"></div>
<div id="data">
Much content goes here.
</div>
</body>
When #data becomes longer tha the sc...
Guid.NewGuid() vs. new Guid()
...this for fun. For a 1% chance of collision, you'd need to generate about 2,600,000,000,000,000,000 GUIDs
– Clinton Ward
Aug 13 '12 at 16:20
...
Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
... debug output which contained a seperate line for every single one of over 600 exceptions!
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How do I force Postgres to use a particular index?
... to set random_page_cost = 0.1 in order to make index scan work on large (~600M rows table) in Pg 10.1 on Ubuntu. Without the tweak, seq scan (despite being parallel) was taking 12 mins (Note that Analyze table was performed!). Drive is SSD. After the tweak, exec time became 1 second.
...
HTML.ActionLink vs Url.Action in ASP.NET Razor
...onLink. I had a list of 6,000 items that had 2 Html.ActionLinks. It took 6,600ms to render the list. Without the Html.ActionLinks it took 52ms. Using Url.Action it took 270ms. Granted, 6000 items is a large list, but thought I'd add it for future reference.
– roberocity
...
getting exception “IllegalStateException: Can not perform this action after onSaveInstanceState”
...
@t0mm13b: to add more as 600 chars are not enough, you have to investigate first what is really causing this for you. You have also to realize that above is an ugly hack and I am not taking any responsibility if it runs or not (for me was the best so...
Getting exact error type in from DbValidationException
...hen in seed method in overrided initializer, I had quite a bit long (about 600 letters) comment.
I think the point is: in EF 4.1 you have to set data annotations explicitly in some cases. For me, setting:
[StringLength(4000)]
public string Comment {get; set;}
helped. It's weird since CTP5 had n...
Pan & Zoom Image
... xmlns:local="clr-namespace:PanAndZoom"
Title="PanAndZoom" Height="600" Width="900" WindowStartupLocation="CenterScreen">
<Grid>
<local:ZoomBorder x:Name="border" ClipToBounds="True" Background="Gray">
<Image Source="image.jpg"/>
</loca...
How to make a HTML Page in A4 paper size page(s)?
...ng:
72 dpi (web) = 595 X 842 pixels
300 dpi (print) = 2480 X 3508 pixels
600 dpi (high quality print) = 4960 X 7016 pixels
Yet, I would avoid the hassle and simply use cm (centimeters) or mm (millimeters) for sizing as that avoids rendering glitches that can arise depending on which client you u...