大约有 1,450 项符合查询结果（耗时：0.0120秒） [XML]
Pandas - Get first row value of a given column
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I'm looping through a bunch of .csv files and reading the first value of a certain column in each. For some reason which I can't explain instead of returning the value this sometimes returns the index along with the value which messes up processing. I resor...
一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术
...，这样就完成了支付，此时老李在电话中听到二狗子确认转账完成，就可以放心让老张把羊牵走了。
此时比特村进入了中央系统虚拟货币时代。每个村民都不需要用实物支付，支付过程变成了二狗子那边维护的账本上数字的变...
Getting the location from an IP address [duplicate]
... I'm after and you can get it to return in multiple formats, json, xml and csv.
$location = file_get_contents('http://freegeoip.net/json/'.$_SERVER['REMOTE_ADDR']);
print_r($location);
This will give you all of the things you could possibly want:
{
"ip": "77.99.179.98",
"country_co...
一文讲透区块链技术原理 - 资讯 - 清泛网 - 专注C/C++及内核技术
...，增加了技术的实用性。
一个脚本本质上是众多指令的列表，这些指令记录在每一次的价值交换活动中，价值交换活动的接收者（价值的持有人）如何获得这些价值，以及花费掉自己曾收到的留存价值需要满足哪些附加条件。...
Why are empty strings returned in split() results?
...isely maps the semantics of all kinds of delimiter-joined records (such as csv file lines [[net of quoting issues]], lines from /etc/group in Unix, and so on), it allows (as @Roman's answer mentioned) easy checks for (e.g.) absolute vs relative paths (in file paths and URLs), and so forth.
Another ...
Difference between \n and \r?
...ere still some applications using \r - e.g. MS Office 2011 Excel: Saving a CSV (with all default settings) - will save an ISO-8859-1 encoded file with \r-line endings.
– CodeBrauer
Jul 11 '17 at 12:48
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Get size of all tables in database
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You can also export the list in a CSV file by using an utility like NirSoft SysExporter: nirsoft.net/utils/sysexp.html
– Max
May 28 at 15:44
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What parameters should I use in a Google Maps URL to go to a lat-lon?
...le times.
via=
Allows you to insert via points in directions. Must be in CSV format. For example, via=1,5 addresses 1 and 5 will be via points without entries in the sidebar. The start point (which is set as 0), and 2, 3 and 4 will all show full addresses.
doflg=
Changes the units used to measur...
How do I switch to another subversion branch in Intellij?
... The user expect similar experience from IDEA across different CSV, which is hard to do cause SVN approach looks "dumb" from GIT prospective. The confusion is in that "same experience" expectation from IDEA magic.
– smile-on
May 29 '15 at 13:28
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Reading Excel files from C#
...port.Tables[0];
#region Commented code for importing data from CSV file.
// string strConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source=" + System.IO.Path.GetDirectoryName(fullFileName) +";" +"Extended Properties=\"Text;HDR=YES;FMT=Delimited\""...