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How to estimate how much memory a Pandas' DataFrame will need?
...thought I would bring some more data to the discussion.
I ran a series of tests on this issue.
By using the python resource package I got the memory usage of my process.
And by writing the csv into a StringIO buffer, I could easily measure the size of it in bytes.
I ran two experiments, each one...
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Great code, it took the script approx. 5 seconds to sort and print out 13k photos in many different folders (through Cygwin on a quite slow computer).
– Magnus
Jan 21 '12 at 10:14
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Visual Studio Wcf Test Client - entering an Int array
I've found the Visual Studio WCF test client quite useful when it comes to a quick test of my WCF service.
This is the test client found in this location relative to your Visual Studio install directory:
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Define make variable at rule execution time
...latively easy way of doing this is to write the entire sequence as a shell script.
out.tar:
set -e ;\
TMP=$$(mktemp -d) ;\
echo hi $$TMP/hi.txt ;\
tar -C $$TMP cf $@ . ;\
rm -rf $$TMP ;\
I have consolidated some related tips here: https://stackoverflow.com/a/29085684/86967
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Java and SQLite [closed]
...SQLite. Just add the JAR file to your classpath and import java.sql.*
His test app will create a database file, send some SQL commands to create a table, store some data in the table, and read it back and display on console. It will create the test.db file in the root directory of the project. You...
How often does python flush to a file?
...me.
Credits: this code was copied mostly from the liveAPI control surface scripts by Nathan Ramella
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Regex lookahead for 'not followed by' in grep
...grep or your grep doesn't support --perl-regexp, you can you one-line perl scripts that work the same way like grep:
perl -e "while (<>) {if (/Ui\.(?!Lines)/){print;};}"
Perl accepts stdin the same way like grep, e.g.
ipset list | perl -e "while (<>) {if (/packets(?! 0 )/){print;};}"...
Splitting a Java String by the pipe symbol using split(“|”)
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You need
test.split("\\|");
split uses regular expression and in regex | is a metacharacter representing the OR operator. You need to escape that character using \ (written in String as "\\" since \ is also a metacharacter in String...
How do I search for an object by its ObjectId in the mongo console?
...e matters) and that the ObjectId is exact.
Documentation is here
> db.test.insert({x: 1})
> db.test.find() // no criteria
{ "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 }
> db.test.find({"_id" : ObjectId("4ecc05e55dd98a436ddcc...
text-overflow: ellipsis not working
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width: 100px;
display: block;
overflow: hidden
}
<span>Test test test test test test</span>
Addendum
If you want an overview of techniques to do line clamping (Multiline Overflow Ellipses), look at this CSS-Tricks page: https://css-tricks.com/line-clampin/
Addendum2 ...