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best practice to generate random token for forgot password

...ions of the microtime() on your server. An attacker can issue a password reset request and then try through a couple of likely tokens. This is also possible if more_entropy is used, as the additional entropy is similarly weak. Thanks to @NikiC and @ScottArciszewski for pointing this out. For more d...
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Redirect STDERR / STDOUT of a process AFTER it's been started, using command line?

... that arguments are abbreviated. To control that use the -s parameter that sets the maximum length of strings displayed. It catches all streams, so you might want to filter that somehow: strace -ewrite -p $PID 2>&1 | grep "write(1" shows only descriptor 1 calls. 2>&1 is to redirec...
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AngularJS - How to use $routeParams in generating the templateUrl?

...plateUrl to point to a partial HTML file that just has ng-include and then set the URL in your controller using $routeParams like this: angular.module('myApp', []). config(function ($routeProvider) { $routeProvider.when('/:primaryNav/:secondaryNav', { templateUrl: 'resources...
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When to Redis? When to MongoDB? [closed]

...ased on your data. Redis provides a bunch of useful data structures (e.g. Sets, Hashes, Lists), but you have to explicitly define how you want to store you data. To put it in a nutshell, Redis and MongoDB can be used in order to achieve similar things. Redis is simply faster, but not suited for pro...
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Short form for Java if statement

... multi user system with a mutable city, there could be an intervening city.setName(null). Your answer neatly handles that. – emory Jan 17 '12 at 18:14 add a comment ...
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Hash Map in Python

I want to implement a HashMap in Python. I want to ask a user for an input. depending on his input I am retrieving some information from the HashMap. If the user enters a key of the HashMap, I would like to retrieve the corresponding value. ...
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Convert datetime to Unix timestamp and convert it back in python

...ve dt = datetime(2013,9,1,11) , and I would like to get a Unix timestamp of this datetime object. 11 Answers ...
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How do I get the row count of a pandas DataFrame?

...np import pandas as pd import perfplot perfplot.save( "out.png", setup=lambda n: pd.DataFrame(np.arange(n * 3).reshape(n, 3)), n_range=[2**k for k in range(25)], kernels=[ lambda data: data.shape[0], lambda data: data[0].count(), lambda data: len(data.index)...
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Rotating x axis labels in R for barplot

... do a little tweaking up and down. Here's an example with the mtcars data set: x <- barplot(table(mtcars$cyl), xaxt="n") labs <- paste(names(table(mtcars$cyl)), "cylinders") text(cex=1, x=x-.25, y=-1.25, labs, xpd=TRUE, srt=45) ...
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How to remove leading and trailing zeros in a string? Python

I have several alphanumeric strings like these 6 Answers 6 ...