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Which is faster: Stack allocation or Heap allocation
...stion any further.
The optimizer has a mission to get rid of the code I'm testing. I don't see any reason to tell the optimizer to run and then try to fool the optimizer into not actually optimizing. But if I saw value in doing that, I would do one or more of the following:
Add a data member to...
mongodb group values by multiple fields
... $slice just off the basic aggregation result. For "large" results, run parallel queries instead for each grouping ( a demonstration listing is at the end of the answer ), or wait for SERVER-9377 to resolve, which would allow a "limit" to the number of items to $push to an array.
db.books.aggregate(...
Optional Parameters in Go?
...hy of Go is to write code in a straightforward way. Just pass a struct and test for default values.
– user3523091
Jan 30 '16 at 23:23
10
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Detect Browser Language in PHP
... do you say they are one letter? Dutch (nl), Greek (el) and Slovenian (sl) all appear to be two letter: msdn.microsoft.com/en-us/library/ms533052(v=vs.85).aspx
– Peter K.
Nov 19 '12 at 17:35
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How do I get a list of column names from a psycopg2 cursor?
... to generate column labels directly from the selected column names, and recall seeing that python's psycopg2 module supports this feature.
...
Rails :include vs. :joins
...de functionality was changed with Rails 2.1. Rails used to do the join in all cases, but for performance reasons it was changed to use multiple queries in some circumstances. This blog post by Fabio Akita has some good information on the change (see the section entitled "Optimized Eager Loading")....
How to add target=“_blank” to JavaScript window.location?
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@twinlakes this gets blocked in all modern browsers.
– Ben Racicot
Nov 4 '15 at 15:21
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How do I find and view a TFS changeset by comment text?
... Worked for me with VS2010, even though TFS is 2008. TFPT2010 latest version, August 2011
– Paul Kapustin
Oct 17 '11 at 13:20
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Bash Templating: How to build configuration files from templates with Bash?
...\}/defined $ENV{$1} ? $ENV{$1} : $&/eg' < template.txt
to replace all ${...} strings with corresponding enviroment variables (do not forget to export them before running this script).
For pure bash this should work (assuming that variables do not contain ${...} strings):
#!/bin/bash
while...
Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5
...es I think you're right I think I heard it in some wwdc videos, but now I tested it on iOS 5.0 device and it crashed. I will go through these videos and check where did I hear it Nonetheless you're right it does crash on iOS 5.0
– Asad Khan
Nov 23 '12 at 16:4...