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What is the most useful script you've written for everyday life? [closed]
...t.txt
findstr /i /r "windows.*system32.*png$" dirlist.txt
This is a very fast solution to set up, and great if you find yourself with a fresh Windows install and no internet connection.
If you need to search within certain file types for some pattern, first list all of the files you need to check...
What is a domain specific language? Anybody using it? And in what way?
... that speed and ease of use are the primary design criteria. Parsing is so fast that any syntax you use is fine, I prefer natural language as my syntax in most cases, "Pay Employees at the first of the month", but domain specific is just that, domain specific, you determine the syntax that best fits...
Make the current Git branch a master branch
...t record a merge
git checkout master
git merge better_branch # fast-forward master up to the merge
If you want your history to be a little clearer, I'd recommend adding some information to the merge commit message to make it clear what you've done. Change the second line to:
git merge...
What is the difference between string primitives and String objects in JavaScript?
...ore than a pointer to a raw data memory reference, which explains the much faster random access speed.
So what happens when you do s.charAt(i) for instance?
Since s is not an instance of String, JavaScript will auto-box s, which has typeof string to its wrapper type, String, with typeof object or ...
How can I reverse a NSArray in Objective-C?
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One of the bad things about Fast Enumeration is that new guys like me don't learn about cool things like reverseObjectEnumerator. Pretty neat way to do it.
– Brent Royal-Gordon
Feb 25 '09 at 15:34
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are there dictionaries in javascript like python?
...gs. They come in very handy once you've found a use for them.
It's not as fast as a native object would be, but I've not found any significant problems with it in that respect.
API:
//Constructor
var dict = new Dict(overwrite:Boolean);
//If overwrite, allows over-writing of duplicate keys,
//oth...
Is Python interpreted, or compiled, or both?
...ary dis module and see what the real deal looks like. Interpreting this is faster than interpreting from a higher-level representation.
That bytecode is either interpreted (note that there's a difference, both in theory and in practical performance, between interpreting directly and first compiling...
ReactJS - Does render get called any time “setState” is called?
...at great React's feature which optimizes real DOM mutation and makes React fast.
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Tricks to manage the available memory in an R session
...arge) data.table at all, not even once.
Aggregation is also particularly fast because data.table uses much less working memory.
Related links :
News from data.table, London R presentation, 2012
When should I use the := operator in data.table?
...
msbuild.exe staying open, locking files
...build with /nr:false.
Briefly: MSBuild tries to do lots of things to be fast, especially with parallel builds. It will spawn lots of "nodes" - individual msbuild.exe processes that can compile projects, and since processes take a little time to spin up, after the build is done, these processes ha...