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Django ModelForm: What is save(commit=False) used for?
..._type = "audio"
if attachment.filename.lower().endswith(('.csv','.dif','.ods','.xls','.tsv','.dat','.db','.xml','.xlsx','.xlr')):
attachment.file_type = "spreasheet"
if attachment.filename.lower().endswith(('.doc','.pdf','.rtf','.txt')):
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What is the difference between RDF and OWL? [closed]
...eb-fin/swlevels.png Just for reference.
– Timo Westkämper
May 16 '10 at 11:57
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One part of thi...
How to create a temporary directory?
...UIT TERM
trap 'rm -rf "$TMPDIR"' EXIT
# Example use of TMPDIR:
for f in *.csv; do
cp "$f" "$TMPDIR"
# remove duplicate lines but keep order
perl -ne 'print if ++$k{$_}==1' "$TMPDIR/$f" > "$f"
done
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动态追踪（Dynamic Tracing）技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...是非常热情、同时非常聪明的工程师。我在 IRC 或者邮件列表里的提问，他们一般都会非常快且非常详尽地进行解答。值得一提的是，我也曾给 SystemTap 贡献过一个较为重要的新特性，使其能在任意的探针上下文中访问用户态的...
Git: How to remove file from historical commit?
...ilter "git rm --cached --ignore-unmatch PathRelativeRepositoryRoot/bigfile.csv" -- --all
After removing the big file, I was able to push my changes to github master.
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Bulk insert with SQLAlchemy ORM
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Compared to inserting the same data from CSV with \copy with psql (from the same client to the same server), I see a huge difference in performance on the server side resulting in about 10x more inserts/s. Apparently is bulk-loading using \copy (or COPY on the serve...
Serializing a list to JSON
...... stack, which provides a set of very fast serializers for Json, JSV and CSV.
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Saving an Object (Data persistence)
...Error though! so does cPickle, pickle and hickle.
– Färid Alijani
Oct 10 '19 at 7:45
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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...baseio.com/posts/comments.json?shallow=true
– Osama Xäwãñz
Aug 12 '17 at 15:37
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What is the recommended batch size for SqlBulkCopy?
...so spent some time looking into. I am looking to optimize importing large CSV files (16+ GB, 65+ million records, and growing) into a SQL Server 2005 database using a C# console application (.Net 2.0). As Jeremy has already pointed out, you will need to do some fine-tuning for your particular circ...