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Is 'switch' faster than 'if'?
... I'm not sure which.
EDIT 2014: There has been some discussion elsewhere from people familiar with the LLVM optimizer saying that the jump table optimization can be important in many scenarios; e.g. in cases where there is an enumeration with many values and many cases against values in said enume...
What's the difference between encoding and charset?
...or example in InputStreamReader, we read "An InputStreamReader is a bridge from byte streams to character streams: It reads bytes and decodes them into characters using a specified charset. The charset that it uses may be specified by name or may be given explicitly, or the platform's default charse...
How to crop an image using C#?
...an use Graphics.DrawImage to draw a cropped image onto the graphics object from a bitmap.
Rectangle cropRect = new Rectangle(...);
Bitmap src = Image.FromFile(fileName) as Bitmap;
Bitmap target = new Bitmap(cropRect.Width, cropRect.Height);
using(Graphics g = Graphics.FromImage(target))
{
g.Dra...
How do you round UP a number in Python?
...the function returns a float. If you want an int, you can construct an int from the return value, i.e., int(math.ceil(363))
– R. W. Sinnet
Aug 26 '15 at 23:37
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Java synchronized static methods: lock on object or class
...us access to class's static fields is controlled by a lock that's distinct from the lock for any instance of the class.
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How do I draw a grid onto a plot in Python?
... python
#-*- coding: utf-8 -*-
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from matplotlib.figure import Figure
from matplotlib.backends.backend_gtk3agg import FigureCanvasGTK3Agg as FigureCanvas
win = Gtk.Window()
win.connect("delete-event", Gtk.main_quit)
win.set_tit...
Equivalent C++ to Python generator pattern
...ist in C++, just under another name: Input Iterators. For example, reading from std::cin is similar to having a generator of char.
You simply need to understand what a generator does:
there is a blob of data: the local variables define a state
there is an init method
there is a "next" method
ther...
How to See the Contents of Windows library (*.lib)
... there a simple way to find out names of the functions and their interface from that library ?
8 Answers
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How to get the file extension in PHP? [duplicate]
... This will fail when you changed a file extention on Windows from .png to .jpg. Under water it will always be a .png.
– CodeWhisperer
Mar 25 '19 at 13:51
add a ...
findViewByID returns null
...f all: yes, I read all the other threads on this topic. And not only those from this site... (you see, I'm a little frustrated)
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