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What exactly is Python's file.flush() doing?
...instructed.
Addendum in 2018.
Note that disks with cache mechanisms is now much more common than back in 2013, so now there are even more levels of caching and buffers involved. I assume these buffers will be handled by the sync/flush calls as well, but I don't really know.
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Is there any difference between the `:key => “value”` and `key: “value”` hash notations?
...he problems with the JavaScript-style have been fixed in Ruby 2.2. You can now use quotes if you have symbols that aren't valid labels, for example:
h = { 'where is': 'pancakes house?', '$set': { a: 11 } }
But you still need the hashrocket if your keys are not symbols.
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Interface vs Base class
...this you will have:
public class Dog : Mammal
public class Cat : Mammal
Now let's suppose there are other mammals, which we will usually see in a zoo:
public class Giraffe : Mammal
public class Rhinoceros : Mammal
public class Hippopotamus : Mammal
This will still be valid because at the core ...
PHP foreach change original array values
...ference (&) is ... controversial. I recommend not using it unless you know why you need it and test the results.
I would recommend doing the following:
foreach ($fields as $key => $field) {
if ($field['required'] && strlen($_POST[$field['name']]) <= 0) {
$fields[$key]...
Create a hexadecimal colour based on a string with JavaScript
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great! thanks, this works well. I don't know much about bitwise operators and stuff so your help porting it over is appreciated.
– Darragh Enright
Aug 8 '10 at 23:28
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Identifying the dependency relationship for python packages installed with pip
...:|Requires:)' | sed s/Name:/\\\nName:/ -- but it seems that pipdeptree is now a better solution.
– Mark Chackerian
Aug 3 '17 at 15:26
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Difference between java.util.Random and java.security.SecureRandom
...l purposes. This also means that your random numbers are predictable right now, something you don't want for session IDs and the like.
How to break a Linear Congruential Generator
The assumption that an attacker would have to wait for the LCG to repeat after a full cycle is wrong. Even with an opt...
How to get current path with query string using Capybara
...ests for a legacy application. Using current_path.should == is working for now (though I need to add a trailing forward-slash as a string). I'm thanking you in advance for code I'll likely need.
– Tass
Aug 19 '11 at 21:16
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Remove grid, background color, and top and right borders from ggplot2
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EDIT Ignore this answer. There are now better answers. See the comments. Use + theme_classic()
EDIT
This is a better version. The bug mentioned below in the original post remains (I think). But the axis line is drawn under the panel. Therefore, remove both t...
throw new std::exception vs throw std::exception
...m not really sure what you're asking about but it sounds like you want to know about the storage and/or lifetime of the exception object which might be answered here. If not you might be better off asking a separate question.
– CB Bailey
Apr 1 '13 at 17:09
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