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Can I use if (pointer) instead of if (pointer != NULL)?
...verted into boolean false while non-null pointers are converted into true. From the C++11 standard, section on Boolean Conversions:
A prvalue of arithmetic, unscoped enumeration, pointer, or pointer to member type can be converted to a
prvalue of type
bool. A zero value, null pointer value, ...
Inputting a default image in case the src attribute of an html is not valid?
...ebsite for compatibility. This element is widely supported by all browsers from IE6+.
* Unless the URL for the image changed (again), in which case you'll probably see the alt text.
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@synthesize vs @dynamic, what are the differences?
...; field). If the value is being produce by something else (e.g. calculated from other fields) then you have to use @dynamic.
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How can I configure the font size for the tree item in the package explorer in Eclipse?
...sibilities is here, to which I owe this answer. I'll repeat one suggestion from there for posterity. Create a file named, say, gtkrc-eclipse:
style "eclipse" {
font_name = "Sans Condensed 8"
}
class "GtkWidget" style "eclipse"
Then set a certain environment variable when invoking eclipse:
$ GT...
C# Lazy Loaded Automatic Properties
...Variable = SomeClass.IOnlyWantToCallYouOnce()); What some might not notice from the first look is that operator evaluates the right-hand operand and returns its result.
– RunninglVlan
Oct 4 '19 at 9:20
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How to group dataframe rows into list in pandas groupby?
...B [5, 5, 4] [3, 4, 4]
C [6] [4]
This answer was inspired from Anamika Modi's answer. Thank you!
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How to “pretty” format JSON output in Ruby on Rails
...you getting around ActiveSupport's redefinition of to_json? This keeps me from pretty printing while ActiveSupport is present.
– Ammo Goettsch
Aug 30 '13 at 14:33
1
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Equivalent of “continue” in Ruby
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Ruby borrowed much from Perl, including Perl's redo command (or its essence, anyway). For Ruby's interpretation, search for "redo" within this page.
– MarkDBlackwell
Mar 30 '19 at 14:32
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What was the strangest coding standard rule that you were forced to follow? [closed]
... recently, multiple returns were banned. Then the fact this was a leftover from C, rendered obsolete by C++ RAII and functions with size less than 15 lines, was revealed. Since then, like Braveheart: "FREEDOM !!!!" ... :-p ...
– paercebal
Oct 20 '08 at 21:13
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Calculating a directory's size using Python?
...ecently I've been using pathlib more and more, here's a pathlib solution:
from pathlib import Path
root_directory = Path('.')
sum(f.stat().st_size for f in root_directory.glob('**/*') if f.is_file())
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