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powershell - extract file name and extension
I need to extract file name and extension from e.g. my.file.xlsx. I don't know the name of file or extension and there may be more dots in the name, so I need to search the string from the right and when I find first dot (or last from the left), extract the part on the right side and the part on the...
In .NET, which loop runs faster, 'for' or 'foreach'?
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Patrick Smacchia blogged about this last month, with the following conclusions:
for loops on List are a bit more than 2 times cheaper than foreach
loops on List.
Looping on array is around 2 times cheaper than looping on...
Difference between outline and border
Does anybody know of any difference between 'border' and 'outline' properties in CSS? If there is no difference, then why are there two properties for the same thing?
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How can I get a list of locally installed Python modules?
I would like to get a list of Python modules, which are in my Python installation (UNIX server).
30 Answers
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Equivalent of varchar(max) in MySQL?
...ax length of a varchar is subject to the max row size in MySQL, which is 64KB (not counting BLOBs):
VARCHAR(65535)
However, note that the limit is lower if you use a multi-byte character set:
VARCHAR(21844) CHARACTER SET utf8
Here are some examples:
The maximum row size is 65535, but a varc...
How do I erase an element from std::vector by index?
... a single element, you could do:
std::vector<int> vec;
vec.push_back(6);
vec.push_back(-17);
vec.push_back(12);
// Deletes the second element (vec[1])
vec.erase(vec.begin() + 1);
Or, to delete more than one element at once:
// Deletes the second through third elements (vec[1], vec[2])
ve...
Declaring variables inside or outside of a loop
Why does the following work fine?
20 Answers
20
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What does default(object); do in C#?
Googling is only coming up with the keyword, but I stumbled across some code that says
8 Answers
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How to print the values of slices
....Printf("%v", projects)
If your array (or here slice) contains struct (like Project), you will see their details.
For more precision, you can use %#v to print the object using Go-syntax, as for a literal:
%v the value in a default format.
when printing structs, the plus flag (%+v) adds field...
Hadoop “Unable to load native-hadoop library for your platform” warning
...-Compile-Hadoop-220-fix-Unable-to-load-native-hadoop-library.htm
Good luck.
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