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Determine a string's encoding in C#
...es sense only for byte streams. If you have a string it is already encoded from someone along the way who already knew or guessed the encoding to get the string in the first place.
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What is the difference between persist() and merge() in JPA and Hibernate?
...peration is
cascaded to entities referenced by X,
if the relationships from X to these
other entities are annotated with the
cascade=PERSIST or cascade=ALL
annotation element value or specified
with the equivalent XML descriptor
element.
If X is a removed entity,
it becomes managed...
How to measure elapsed time in Python?
...est clock available on your platform and version of Python automatically:
from timeit import default_timer as timer
start = timer()
# ...
end = timer()
print(end - start) # Time in seconds, e.g. 5.38091952400282
timeit.default_timer is assigned to time.time() or time.clock() depending on OS. On ...
Count the items from a IEnumerable without iterating?
... @Shimmy You iterate and count the elements. Or you call Count() from the Linq namespace that does this for you.
– Mendelt
Dec 1 '09 at 8:47
1
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Warning message: In `…` : invalid factor level, NA generated
...
If you are reading directly from CSV file then do like this.
myDataFrame <- read.csv("path/to/file.csv", header = TRUE, stringsAsFactors = FALSE)
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Difference between CLOB and BLOB from DB2 and Oracle Perspective?
...tackoverflow.com%2fquestions%2f21570751%2fdifference-between-clob-and-blob-from-db2-and-oracle-perspective%23new-answer', 'question_page');
}
);
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Can I mix MySQL APIs in PHP?
...ence:
You can't mix any of the three (mysql_*, mysqli_*, PDO) MYSQL API's from PHP together, it just doesn't work. It's even in the manual FAQ:
It is not possible to mix the extensions. So, for example, passing a mysqli connection to PDO_MySQL or ext/mysql will not work.
You need to use the...
How to delete .orig files after merge from git repository?
...
you have to first remove file from repository git rm <filename> and then commit.after this add *.orig file into git ignore.
– Amar
Sep 11 '12 at 9:18
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How to extract numbers from a string and get an array of ints?
I have a String variable (basically an English sentence with an unspecified number of numbers) and I'd like to extract all the numbers into an array of integers. I was wondering whether there was a quick solution with regular expressions?
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How do you read CSS rule values with JavaScript?
...
Adapted from here, building on scunliffe's answer:
function getStyle(className) {
var cssText = "";
var classes = document.styleSheets[0].rules || document.styleSheets[0].cssRules;
for (var x = 0; x < classes.length; ...