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How can I generate an MD5 hash?
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This topic is also useful if you need to convert the resulting bytes to hex string.
– weekens
May 22 '12 at 7:25
1
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How do I compare two DateTime objects in PHP 5.2.8?
... that, you may incur into problems due to different number lengths. Either convert the results to numbers (subtracting them works too), or use a truly sortable format like c.
– MaxArt
Jun 18 '15 at 8:25
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Extracting just Month and Year separately from Pandas Datetime column
...ore. Using df.my_date_column.astype('datetime64[M]'), as in @Juan's answer converts to dates representing the first day of each month.
– Nickolay
May 26 '18 at 19:52
4
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How to solve the error LNK2019: unresolved external symbol - function?
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So every time you want to run unit tests you should convert your testee project into a static library, and every time where you actually want to run your program you convert it back to an executable, how is this a solution?
– A. Smoliak
J...
How to get a list of user accounts using the command line in MySQL?
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Use this query:
SELECT User FROM mysql.user;
Which will output a table like this:
+-------+
| User |
+-------+
| root |
+-------+
| user2 |
+-------+
As Matthew Scharley points out in the comments on this answer, you can group by the ...
Extract a dplyr tbl column as a vector
...2 3.62 3.54 4.11
A nice way to do this in v0.2 of dplyr:
iris2 %>% select(Species) %>% collect %>% .[[5]]
Or if you prefer:
iris2 %>% select(Species) %>% collect %>% .[["Species"]]
Or if your table isn't too big, simply...
iris2 %>% collect %>% .[["Species"]]
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How to paste over without overwriting register
Does anyone know of a way to paste over a visually selected area without having the selection placed in the default register?
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Numpy - add row to array
...e necessary after every row, it's much quicker to add rows in python, then convert to numpy. Here are timing tests using python 3.6 vs. numpy 1.14, adding 100 rows, one at a time:
import numpy as np
from time import perf_counter, sleep
def time_it():
# Compare performance of two methods for a...
How do we count rows using older versions of Hibernate (~2009)?
...eturn int and use this form:
int count = ((Long)getSession().createQuery("select count(*) from Book").uniqueResult()).intValue();
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Make Visual Studio understand CamelCase when hitting Ctrl and cursor keys
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Is there an option, to select the whole word, even if CameHumps is on? At the moment I have to press right or left several times to select a word. I hope you get me.
– Ozkan
Oct 7 '16 at 14:01
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