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How to import data from mongodb to pandas?
... Thanks, this is the method i ended up using. I also had an array of embedded documents in each row. So I had to iterate that as well within each row. Is there a better way to do this??
– Nithin
Apr 29 '13 at 6:42
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Concatenate two string literals
...ate two string literals using +, it is because a string literal is just an array of characters (a const char [N] where N is the length of the string plus one, for the null terminator). When you use an array in most contexts, it is converted into a pointer to its initial element.
So, when you try...
Is there a reason that we cannot iterate on “reverse Range” in ruby?
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It builds temporary array, at least in 2.4.1 ruby-doc.org/core-2.4.1/Enumerable.html#method-i-reverse_each
– kolen
Aug 24 '17 at 20:16
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Why is there no Char.Empty like String.Empty?
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Isn't the \0 the 'end of the byte array'-character? Or am I confusing with something else?
– Bertvan
Sep 8 '10 at 17:47
5
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How can I parse a YAML file from a Linux shell script?
... It would be amazing if it could turn the yaml - notation into native bash arrays too!
– quickshiftin
Apr 3 '14 at 2:26
3
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How do I query using fields inside the new PostgreSQL JSON datatype?
...The answer to the original question in Postgres 9.3:
SELECT *
FROM json_array_elements(
'[{"name": "Toby", "occupation": "Software Engineer"},
{"name": "Zaphod", "occupation": "Galactic President"} ]'
) AS elem
WHERE elem->>'name' = 'Toby';
Advanced example:
Query combinations w...
How to implement a queue using two stacks?
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@Tyler If your stack is array based, as most are, you will always get O(n) worst case for a single operation.
– Thomas Ahle
Dec 6 '11 at 10:24
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Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
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当问题比较简单的时候，通常SRCache和Memc模块一起搭配使用。网上能搜索到一些相关的例子，大家可以参考，这里就不赘述了。当问题比较复杂的时候，比如说缓存键的动态计算等，就不得不写一点代码了，此时Lua模块是最佳...
How do I find the width & height of a terminal window?
...d and parse the output.
function getTerminalSizeOnWindows() {
$output = array();
$size = array('width'=>0,'height'=>0);
exec('mode',$output);
foreach($output as $line) {
$matches = array();
$w = preg_match('/^\s*columns\:?\s*(\d+)\s*$/i',$line,$matches);
if($w) {
$si...
How to get the nth occurrence in a string?
...Given an unbounded length input, it needlessly creates an unbounded length array, and then throws most of it away. It would be faster and more efficient just to iteratively use the fromIndex argument to String.indexOf
– Alnitak
Jan 23 '13 at 13:31
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