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Writing a Python list of lists to a csv file
...',2]]
In [3]: my_df = pd.DataFrame(a)
In [4]: my_df.to_csv('my_csv.csv', index=False, header=False)
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Number of occurrences of a character in a string [duplicate]
...u could do this:
int count = test.Split('&').Length - 1;
Or with LINQ:
test.Count(x => x == '&');
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Getting the last element of a list
...lement
>>> some_list
[1, 3, 5]
Note that getting a list item by index will raise an IndexError if the expected item doesn't exist. This means that some_list[-1] will raise an exception if some_list is empty, because an empty list can't have a last element.
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How to pass variable from jade template file to a script file?
... having trouble with a variable (config) declared in a jade template file (index.jade) that isn't passed to a javascript file, which then makes my javascript crash. Here is the file (views/index.jade):
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Large, persistent DataFrame in pandas
...der, which is iterable with chunks of 1000 rows.
df = pd.concat(tp, ignore_index=True) # df is DataFrame. If errors, do `list(tp)` instead of `tp`
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Different ways of adding to Dictionary
...can check this out by opening the class in Reflector.net
This is the This indexer:
public TValue this[TKey key]
{
get
{
int index = this.FindEntry(key);
if (index >= 0)
{
return this.entries[index].value;
}
ThrowHelper.ThrowKeyNotFound...
Git commit in terminal opens VIM, but can't get back to terminal
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To save your work and exit press Esc and then :wq (w for write and q for quit).
Alternatively, you could both save and exit by pressing Esc and then :x
To set another editor run export EDITOR=myFavoriteEdioron your terminal, where myFavoriteEdior can be vi, gedit, subl(f...
How to determine the longest increasing subsequence using dynamic programming?
...f the LIS (Longest increasing subsequence) which is ending at element with index i. To compute DP[i] we look at all indices j < i and check both if DP[j] + 1 > DP[i] and array[j] < array[i] (we want it to be increasing). If this is true we can update the current optimum for DP[i]. To find t...
How to flip windows in vim? [duplicate]
...ween the two windows/buffers.
You may wish to bind one or more of these sequences to make it faster to type. I put this in my .vimrc so that ,l moves the cursor to the next buffer in the current tab:
let mapleader = ","
nmap <Leader>l <C-w>w
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bash: Bad Substitution
...and that bash syntax is not supported by some other shell (probably dash). Questions don't always contain all the needed details, and we must join the dots... anyway feel free to downvote my answer.
– Vanni Totaro
Dec 1 '15 at 11:10
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