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How often should you use git-gc?
... 2.7 (Q4 2015) will make sure to not lose the error message.
See commit 329e6e8 (19 Sep 2015) by Nguyễn Thái Ngọc Duy (pclouds).
(Merged by Junio C Hamano -- gitster -- in commit 076c827, 15 Oct 2015)
gc: save log from daemonized gc --auto and print it next time
While commit 9f673f9 ...
What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?
...ll$ perror 150
MySQL error code 150: Foreign key constraint is incorrectly formed
To find out more details about what failed, you can use SHOW ENGINE INNODB STATUS and look for the LATEST FOREIGN KEY ERROR section it contains details about what is wrong.
In your case, it is most likely cause so...
Maximum length for MySQL type text
I'm creating a form for sending private messages and want to set the maxlength value of a textarea appropriate to the max length of a text field in my MySQL database table. How many characters can a type text field store?
...
Simple way to calculate median with MySQL
...al FROM data ORDER BY val limit @middlevalue) x;
I tested this with a 5x10e6 dataset of random numbers and it will find the median in under 10 seconds.
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How to remove close button on the jQuery UI dialog?
...o site with ASP.NET v2.0 in an .aspx page. jqueryui.com/demos/dialog/modal-form.html
– Matthew Dally
Feb 14 '12 at 13:53
...
Iterate through a C++ Vector using a 'for' loop
...han i and thus introduce a fault into the program.
In contrast, the other forms listed here, namely the range based for loop, and iterators, are a lot less error prone. The language's semantics and the compiler's type checking mechanism will prevent you from accidentally accessing an array using th...
How to allow only numeric (0-9) in HTML inputbox using jQuery?
...t varies:
Most browsers will only validate the input when submitting the form, and not when typing.
Most mobile browsers don't support the step, min and max attributes.
Chrome (version 71.0.3578.98) still allows the user to enter the characters e and E into the field. Also see this question.
Firef...
filter for complete cases in data.frame using dplyr (case-wise deletion)
...his maybe as part of filter.
library('rbenchmark')
library('dplyr')
n = 5e6
n.na = 100000
df = data.frame(
x1 = sample(1:10, n, replace=TRUE),
x2 = sample(1:10, n, replace=TRUE)
)
df$x1[sample(1:n, n.na)] = NA
df$x2[sample(1:n, n.na)] = NA
benchmark(
df %>% filter(complete.cases(x...
Git: How to return from 'detached HEAD' state
... if you do this? Isn't this a better way? stackoverflow.com/a/61489179/13087176
– user13087176
Apr 28 at 20:13
@tipsy...
Specifying and saving a figure with exact size in pixels
...n example. Here's how to show an 800x800 pixel image in my monitor (my_dpi=96):
plt.figure(figsize=(800/my_dpi, 800/my_dpi), dpi=my_dpi)
So you basically just divide the dimensions in inches by your DPI.
If you want to save a figure of a specific size, then it is a different matter. Screen DPIs...