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Getting the last argument passed to a shell script
...array[@]}"; do something "$element"; done or iterate over the indices: for index in "${!array[@]}"; do something "$index" "${array[$index]}"; done if you need to do something with the values of the indices.
– Paused until further notice.
Mar 18 '19 at 17:38
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Insert the carriage return character in vim
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Type: ctrl-v ctrl-m
On Windows Use: ctrl-q ctrl-m
Ctrl-V tells vi that the next character typed should be inserted literally and ctrl-m is the keystroke for a carriage return.
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Mongoose's find method with $or condition does not work properly
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According to mongoDB documentation: "...That is, for MongoDB to use indexes to evaluate an $or expression, all the clauses in the $or expression must be supported by indexes."
So add indexes for your other fields and it will work. I had a similar problem and this solved it.
You can read m...
Difference between Iterator and Listiterator?
... that with a Set is simple: There is not "current point": Elements have no index and there is no usefull way you can add an element "before" or "after" another one.
– Joachim Sauer
Jun 11 '12 at 10:11
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Shuffling a list of objects
...erm = list(range(len(list_one)))
random.shuffle(perm)
list_one = [list_one[index] for index in perm]
list_two = [list_two[index] for index in perm]
Numpy / Scipy
If your lists are numpy arrays, it is simpler:
import numpy as np
perm = np.random.permutation(len(list_one))
list_one = list_one[per...
Circular list iterator in Python
... do like this:
conn = ['a', 'b', 'c', 'd', 'e', 'f']
conn_len = len(conn)
index = 0
while True:
print(conn[index])
index = (index + 1) % conn_len
prints a b c d e f a b c... forever
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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Count();
///使用某个shet，shit，shit
BOOL LoadSheet(long table_index,BOOL pre_load = FALSE);
///通过名称使用某个sheet，
BOOL LoadSheet(const TCHAR* sheet,BOOL pre_load = FALSE);
///通过序号取得某个Sheet的名称
CString GetSheetName(long table_index);
///得...
Starting python debugger automatically on error
This is a question I have wondered about for quite some time, yet I have never found a suitable solution. If I run a script and I come across, let's say an IndexError, python prints the line, location and quick description of the error and exits. Is it possible to automatically start pdb when an err...
Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:
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This looks good and thanks for doing it. However, had one question: why are you doing return [super hitTest:point withEvent:event]; ? Wouldn't you just return nil if there is no subview that triggers the touch? Apple says hitTest returns nil if no subview contains the touch.
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Propagate all arguments in a bash shell script
...cond
Received: first
Received: second
Received:
Received:
$ ./foo.sh "one quoted arg"
Received: one
Received: quoted
Received: arg
Received:
$ ./bar.sh first second
Received: first
Received: second
Received:
Received:
$ ./bar.sh "one quoted arg"
Received: one quoted arg
Received:
Received:
Receiv...