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Places where JavaBeans are used?
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BalusCBalusC
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Detect URLs in text with JavaScript
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edited Jun 1 at 5:43
mplungjan
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an...
Drop data frame columns by name
...a simple list of names :
DF <- data.frame(
x=1:10,
y=10:1,
z=rep(5,10),
a=11:20
)
drops <- c("x","z")
DF[ , !(names(DF) %in% drops)]
Or, alternatively, you can make a list of those to keep and refer to them by name :
keeps <- c("y", "a")
DF[keeps]
EDIT :
For those still not ac...
How do I read any request header in PHP
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15 Answers
15
Active
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List of lists changes reflected across sublists unexpectedly
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593
When you write [x]*3 you get, essentially, the list [x, x, x]. That is, a list with 3 referenc...
How to safely upgrade an Amazon EC2 instance from t1.micro to large? [closed]
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5 Answers
5
Active
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Lock Escalation - What's happening here?
...e default in SQL 2008. Note that LOCK_ESCALATION isn't supported in SQL 2005, so you'll need to strip it if trying to run the script on a 2005 instance. Also, since TABLE is the default, you can safely remove that line when re-running your script.
Also note that, in SQL 2005 before this setting was...
Replace values in list using Python [duplicate]
...e if you want, but it doesn't actually save time:
items = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
for index, item in enumerate(items):
if not (item % 2):
items[index] = None
Here are (Python 3.6.3) timings demonstrating the non-timesave:
In [1]: %%timeit
...: items = [0, 1, 2, 3, 4, 5,...
Nginx serves .php files as downloads, instead of executing them
...y to run some .php file it's just downloading it...
for example... http://5.101.99.123/info.php it's working but... If I go to the main http://5.101.99.123 it's downloading my index.php :/
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Code Golf: Collatz Conjecture
...mand line:
;
; >> $ ./collatz 123
; >> 123 --> 370 --> 185 --> 556 --> 278 --> 139 --> 418 --> 209 --> 628 --> 314
; >> --> 157 --> 472 --> 236 --> 118 --> 59 --> 178 --> 89 --> 268 --> 134 --> 67
; >> --> 202 -->...