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'float' vs. 'double' precision
..., which is why the precision is more than doubled.
1: Section 5.2.4.2.2 ( http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf )
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How to dump a dict to a json file?
...retty-print json file.
The tricks print >> f, j is found from here:
http://www.anthonydebarros.com/2012/03/11/generate-json-from-sql-using-python/
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Perl flags -pe, -pi, -p, -w, -d, -i, -t?
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Should I use encodeURI or encodeURIComponent for encoding URLs?
...ring with symbols & characters that have special meaning?";
var uri = 'http://example.com/foo?hello=' + encodeURIComponent(world);
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Rails 4 multiple image or file upload using carrierwave
...ke a look at CarrierWave's documentation, this is actually very easy now.
https://github.com/carrierwaveuploader/carrierwave/blob/master/README.md#multiple-file-uploads
I will use Product as the model I want to add the pictures, as an example.
Get the master branch Carrierwave and add it to your...
How to export/import PuTTy sessions list?
...bing data off that old drive there is one more solution worth mentioning:
http://www.nirsoft.net/utils/registry_file_offline_export.html
This great and free console application will export the entire registry or only a specific registry key. In my case i simply copied the registry file from an old...
Can anyone explain python's relative imports?
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Create a CSV File for a user in PHP
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Just to clarify, the correct HTTP Content-Type header for CSV is text/csv, not application/csv. I doubt any modern browser will care either way, but since there are standards we might as well use them.
– fentie
Oct ...
Why does sys.exit() not exit when called inside a thread in Python?
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搭建高可用mongodb集群（四）—— 分片 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
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cd /data/mongodbtest
3、下载mongodb的安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.8.tgz
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.8.tgz
4、分别在每台机器建立mongos 、config 、 shard1 、shard2、shard3 五个目录。...