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How to generate random SHA1 hash to use as ID in node.js?
... answer Gabi, and just a tiny bit faster, about 15%. Great job both! I actually like to see a Date() in the salt, it gives a developer easy confidence that this will be unique value in all but the most insane parallel computing situations. I know its silly and randomBytes(20) is going to be unique, ...
How to calculate moving average using NumPy?
...5, 13.5, 14.5, 15.5, 16.5, 17.5])
So I guess the answer is: it is really easy to implement, and maybe numpy is already a little bloated with specialized functionality.
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How do I fix the “You don't have write permissions into the /usr/bin directory” error when installin
I'm trying to install Rails 3 on a brand new MacBook Pro running OS X 10.6.3, Ruby 1.8.7, and Rails 2.3.5 and I'm wondering if I've hosed myself. So far, I've run these commands:
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Page scroll when soft keyboard popped up
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it's autometically open keyboard even there is not edittext
– Mr X
Dec 21 '18 at 5:49
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Programmatically change the src of an img tag
...ng an image src (especial when you're using elements that have IDs), you really should try to avoid jQuery, since the call is so much slower than the pure JS call
– Brian Leishman
Apr 8 '15 at 13:36
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Markdown `native` text alignment
...are not included as extended features of Github Flavored Markdown. This is all github supports as of Jan 2017. There are many online markdown testers that say they comply with GFM and show things like inline styles working, but github markdown [pretty much]* doesn't support HTML/CSS at the moment. ...
mysqldump data only
I am looking for the syntax for dumping all data in my mysql database. I don't want any table information.
8 Answers
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How can we prepend strings with StringBuilder?
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Prepending a String will usually require copying everything after the insertion point back some in the backing array, so it won't be as quick as appending to the end.
But you can do it like this in Java (in C# it's the same, but the method is called In...
LEFT OUTER joins in Rails 3
...te a warning in Rails 4 unless you also add references(:comments). Additionally, this will cause all returned comments to be eager loaded in memory due to the includes, which is possibly not what you want.
– Derek Prior
Nov 30 '13 at 1:58
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Batch files : How to leave the console window open
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If that is really all the batch file is doing, remove the cmd /K and add PAUSE.
start /B /LOW /WAIT make package
PAUSE
Then, just point your shortcut to "My Batch File.bat"...no need to run it with CMD /K.
UPDATE
Ah, some new info......