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How do I get the row count of a pandas DataFrame?
I'm trying to get the number of rows of dataframe df with Pandas, and here is my code.
14 Answers
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SecurityError: Blocked a frame with origin from accessing a cross-origin frame
...Examples
Here's what would happen trying to access the following URLs from http://www.example.com/home/index.html
URL RESULT
http://www.example.com/home/other.html -> Success
http://www.example.com/dir/inner/another.php -> Success
http://www...
Explain the use of a bit vector for determining if all characters are unique
... here. @Dejel Here's the java data structure that you can use: docs.oracle.com/javase/7/docs/api/java/util/BitSet.html. Hopefully this helps someone traveling through the intertubes.
– nattyddubbs
Jan 20 '14 at 16:06
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C++ convert from 1 char to string? [closed]
I need to cast only 1 char to string . The opposite way is pretty simple like str[0] .
2 Answers
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%d,%c,%s,%x等转换符 释义 - C/C++ - 清泛IT论坛，有思想、有深度
...六进制整数0f(0F) e.g. 0x1234
%p 指针
%s 字符串 %S Unicode字符串（双字节）
%% "%"
2．标志
左对齐："-" e.g. "%-20s"
右对齐："+" e.g. "%+20s"
空格：若符号为正...
check if jquery has been loaded, then load it if false
...eElement('script');
script.type = "text/javascript";
script.src = "http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js";
document.getElementsByTagName('head')[0].appendChild(script);
}
</script>
You'll also need to check if the JQuery has loaded after appending it to...
Remove everything after a certain character
Is there a way to remove everything after a certain character or just choose everything up to that character? I'm getting the value from an href and up to the "?", and it's always going to be a different amount of characters.
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Different types of thread-safe Sets in Java
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Ignoring time zones altogether in Rails and PostgreSQL
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Check if a Bash array contains a value
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Shellcheck complains about this solution, SC2199 and SC2076. I couldn't fix the warnings without breaking the functionality. Any thoughts about that other than disabling shellcheck for that line?
– Ali Essam
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