大约有 40,000 项符合查询结果（耗时：0.0637秒） [XML]
Equivalent of “throw” in R
...Division by zero.
[1] "It's ok!"
You can read more about it here: http://www1.maths.lth.se/help/R/R.oo/
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How to remove a field completely from a MongoDB document?
...xample.update({}, {$unset: {words:1}}, false, true);
Refer this:
http://www.mongodb.org/display/DOCS/Updating#Updating-%24unset
UPDATE:
The above link no longer covers '$unset'ing. Be sure to add {multi: true} if you want to remove this field from all of the documents in the collection; otherw...
Real life trading API [closed]
...
https://www.quantopian.com
i suppose the newest, but has an online ide / debugger / visualizer, and integration with interactive brokers for paper trading and real trading. great community for R&D too
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Remove Trailing Spaces and Update in Columns in SQL Server
...ata from excel file using ETL
and finaly i found solution there :
https://www.codeproject.com/Tips/330787/LTRIM-RTRIM-doesn-t-always-work
hope it helps ;)
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When should I use std::thread::detach?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
How do I send a cross-domain POST request via JavaScript?
...se.
Example script:
$.ajax({
type: "POST",
url: "http://www.yoururl.com/",
crossDomain: true,
data: 'param1=value1&param2=value2',
success: function (data) {
// do something with server response data
},
error: function (err) ...
Jump to matching XML tags in Vim
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There is a vim plugin called matchit.vim . You can find it here: http://www.vim.org/scripts/script.php?script_id=39 . It was created pretty much the exact purpose you describe.
Install that, place your cursor on the body of the tag (not the <>, else it'll match those) and press % to jump t...
How to log cron jobs?
...hes -), to define increment of ranges (slashes), etc. Take a look:
http://www.softpanorama.org/Utilities/cron.shtml
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Get query from java.sql.PreparedStatement [duplicate]
... contract, but if you're lucky, the JDBC driver in question may return the complete SQL by just calling PreparedStatement#toString(). I.e.
System.out.println(preparedStatement);
To my experience, the ones which do so are at least the PostgreSQL 8.x and MySQL 5.x JDBC drivers. For the case your JD...
Modify SVG fill color when being served as Background-Image
...eight: 50px;
background: inline-svg('<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
viewBox="0 0 30 30" enable-background="new 0 0 30 30" xml:space="preserve">
<path fill="' + $icon-color + '" d="M18.7,10.1c-0.6,0.7-1,1....