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HashSet versus Dictionary w.r.t searching time to find if an item exists
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HashSet vs List vs Dictionary performance test, taken from here.
Add 1000000 objects (without checking duplicates)
Contains check for half the objects of a collection of 10000
Remove half the objects of a collection of 10000
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How to check for an undefined or null variable in JavaScript?
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I think the most efficient way to test for "value is null or undefined" is
if ( some_variable == null ){
// some_variable is either null or undefined
}
So these two lines are equivalent:
if ( typeof(some_variable) !== "undefined" && some_variab...
Replacing spaces with underscores in JavaScript?
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Future people browsing this @Inez has a link to test both speeds of split/join VS. replace. As of late 2018 replace is significantly faster.
– ricks
Aug 17 '18 at 14:48
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Is “double hashing” a password less secure than just hashing it once?
...a desktop system can compute 1 million hashes per second. The attacker can test her whole list is less than three hours if only one iteration is used. But if just 2000 iterations are used, that time extends to almost 8 months. To defeat a more sophisticated attacker—one capable of downloading a pr...
Disable same origin policy in Chrome
...(or chromium) and restart with the --disable-web-security argument. I just tested this and verified that I can access the contents of an iframe with src="http://google.com" embedded in a page served from "localhost" (tested under chromium 5 / ubuntu). For me the exact command was:
Note : Kill all...
Loop through files in a folder using VBA?
... takes wild cards so you could make a big difference adding the filter for test up front and avoiding testing each file
Sub LoopThroughFiles()
Dim StrFile As String
StrFile = Dir("c:\testfolder\*test*")
Do While Len(StrFile) > 0
Debug.Print StrFile
StrFile = Dir
L...
AngularJS : automatically detect change in model
...elements according to it's state (modified/not modified) dynamically or to test whether some values has actually changed, you can use the following module, developed by myself:
https://github.com/betsol/angular-input-modified
It adds additional properties and methods to the form and it's child elem...
Why is string concatenation faster than array join?
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I know this is an old thread, but your test is incorrect. You are doing output += myarray[i]; while it should be more like output += "" + myarray[i]; because you've forgot, that you have to glue items together with something. The concat code should be something li...
How to check if remote branch exists on a given remote repository?
...he most idiomatic solution. The result can be checked directly in a shell test or by checking the status variable $?.
$ git ls-remote --exit-code --heads git@github.com:user/repo.git branch-name
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In JavaScript can I make a “click” event fire programmatically for a file input element?
...t have the time to work my way through all 10+ flavors of relevant ones to test on.
– Yevgeny Simkin
Sep 15 '10 at 5:11
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