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How do I calculate the normal vector of a line segment?
Suppose I have a line segment going from (x1,y1) to (x2,y2). How do I calculate the normal vector perpendicular to the line?
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sqlalchemy flush() and get inserted id?
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Your sample code should have worked as it is. SQLAlchemy should be providing a value for f.id, assuming its an autogenerating primary-key column. Primary-key attributes are populated immediately within the flush() process as t...
What does “%.*s” mean in printf?
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You can use an asterisk (*) to pass the width specifier/precision to printf(), rather than hard coding it into the format string, i.e.
void f(const char *str, int str_len)
{
printf("%.*s\n", str_len, str);
}
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Win10正式版官方原版ISO镜像下载大全（64位&32位） - 软件下载 - 清泛网 - ...
...方原版 正式版【64位简体中文家庭 专业版】 文件名：cn_windows_10_multiple_editions_x64_dvd_6848463.iso 体积：4.01GB SHA1：C71D49A6...【64位简体中文家庭/专业版】
文件名：cn_windows_10_multiple_editions_x64_dvd_6848463.iso
体积：4.01GB
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What is the purpose of the -nodes argument in openssl?
What is the purpose of the -nodes argument in openssl?
2 Answers
2
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Rails where condition using NOT NIL
Using the rails 3 style how would I write the opposite of:
5 Answers
5
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Setting href attribute at runtime
What is the best way to set the href attribute of the <a> tag at run time using jQuery?
5 Answers
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Filtering a list based on a list of booleans
I have a list of values which I need to filter given the values in a list of booleans:
6 Answers
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Heroku error: “Permission denied (public key)”
I keep getting this error. I am using Mac. I generated a key and added it to heroku using
6 Answers
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How to read data from a zip file without having to unzip the entire file
Is there anyway in .Net (C#) to extract data from a zip file without decompressing the complete file?
6 Answers
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