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Why does flowing off the end of a non-void function without returning a value not produce a compiler
...t no-arg gcc to emit some warnings could be a breaking change for existing scripts or make systems. Well designed ones either -Wall and deal with warnings, or toggle individual warnings.
Learning to use a C++ tool chain is a barrier to learning to be a C++ programmer, but C++ tool chains are typic...
Create timestamp variable in bash script
I am trying to create a timestamp variable in a shell script to make the logging a little easier. I want to create the variable at the beginning of the script and have it print out the current time whenever I issue echo $timestamp . It proving to be more difficult then I thought. Here are some thin...
How to remove all .svn directories from my application directories
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In Windows, you can use the following registry script to add "Delete SVN Folders" to your right click context menu. Run it on any directory containing those pesky files.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\DeleteSVN]
@...
How to have jQuery restrict file types on upload?
... checking with PHP already. I am running my submit button through a JavaScript function already so I really just need to know how to check for the file types before submit or alert.
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How to set HTTP headers (for cache-control)?
...nclude file .(html?|txt|css|js|php|pl)$
mod_gzip_item_include handler ^cgi-script$
mod_gzip_item_include mime ^text/.*
mod_gzip_item_include mime ^application/x-javascript.*
mod_gzip_item_exclude mime ^image/.*
mod_gzip_item_exclude rspheader ^Content-Encoding:.*gzip.*
</ifModule>
##Tweaks##
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How to load images dynamically (or lazily) when users scrolls them into view
...to work fine (so far). There's probably a dozen things some of the popular scripts address that I haven't thought of.
Note - This solution is fast and easy to implement but of course not great for performance. Definitely look into the new Intersection Observer as mentioned by Apoorv and explained ...
What's to stop malicious code from spoofing the “Origin” header to exploit CORS?
The way I understand it, if a client-side script running on a page from foo.com wants to request data from bar.com, in the request it must specify the header Origin: http://foo.com , and bar must respond with Access-Control-Allow-Origin: http://foo.com .
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Remove rows with all or some NAs (missing values) in data.frame
... sparsity of your particular dataset.
Note log scale on y axis.
Benchmark script
#------- Adjust these assumptions for your own use case ------------
row_size <- 1e6L
col_size <- 20 # not including ID column
p_missing <- 0.05 # likelihood of missing observation (except ID col)...
How to handle command-line arguments in PowerShell
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You are reinventing the wheel. Normal PowerShell scripts have parameters starting with -, like script.ps1 -server http://devserver
Then you handle them in param section in the beginning of the file.
You can also assign default values to your params, read them from console...
Handling specific errors in JavaScript (think exceptions)
... Well Microsoft's C# certainly handles errors better than Javascript :P. Mozzilla added something like it to Firefox that's like that. Though it's not in the Ecmascript standard, not even ES6, but they also explain how to make it conform, though it's not as succint. Basically same as ab...