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What is the difference between a deep copy and a shallow copy?
...value type bit by bit" is correct, but it's a bit confusing. If you have a Customer object which "has" an Address object, copying the Customer object "bit by bit" means that the pointer/reference to the Address object is copied. Original and copy both point to the same Address object, whereas a deep...
Force R not to use exponential notation (e.g. e+10)?
...never forget it. Also, as time goes by your .Rprofile accumulates all your customizations.
– smci
Feb 13 '18 at 7:57
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How to check if mysql database exists
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* OK, apparently PHPMyAdmin just displays all database names in lower case, and your query works using both anyway
– Hubro
Jun 15 '12 at 13:21
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Convert string to variable name in JavaScript
...ss true. Javascript does not have variable variables (such as $$varname in php) so this really is the only answer. Using window[varname] has the side-effect of introducing global variables, which might not be wanted. @Shaz I don't think you give modern JS interpreters enough credit. They are extreme...
angular ng-repeat in reverse
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I would suggest using a custom filter such as this:
app.filter('reverse', function() {
return function(items) {
return items.slice().reverse();
};
});
Which can then be used like:
<div ng-repeat="friend in friends | reverse">{{frie...
Maximum length of the textual representation of an IPv6 address?
I want to store the data returned by $_SERVER["REMOTE_ADDR"] in PHP into a DB field, pretty simple task, really. The problem is that I can't find any proper information about the maximum length of the textual representation of an IPv6 address, which is what a webserver provides through $_SERVER...
Free XML Formatting tool [closed]
...nt spaces as it may default to 0).
It looks simple, however it contains a custom written XML parser written in C++ that allows it to work efficiently with very large XML files easily (unlike some expensive "espionage" related tools I've used).
From the product page:
The full Visual C++ source ...
Undefined reference to `sin` [duplicate]
...ftware on "POSIX compliant systems" in order to reach more platforms.
UNIX customers demanded "POSIX compliant" UNIX systems to run the software.
The pressures that fed into the decision to put -lm in a different library probably included, but are not limited to:
It seems like a good way to keep...
Is there a way to auto expand objects in Chrome Dev Tools?
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Couple this with Adding custom functionality into chrome's console and we can have pretty(a) in all sites at all times ;)
– brasofilo
Oct 12 '14 at 1:21
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In Python, using argparse, allow only positive integers
...e integer.')
return namespace
This technique may not be as cool as a custom callable, but it does the job.
About ArgumentParser.error(message):
This method prints a usage message including the message to the standard error and terminates the program with a status code of 2.
Credit: ...