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Simulator or Emulator? What is the difference?
...o match an existing target. The internal state of the emulation mechanism does not have to accurately reflect the internal state of the target which it is emulating.
Simulation, on the other hand, involves modeling the underlying state of the target. The end result of a good simulation is that th...
How do I check if file exists in Makefile so I can delete it?
... same level as the name of the target, e.g., to download a file only if it doesn't currently exist, the following code could be used:
download:
ifeq (,$(wildcard ./glob.c))
curl … -o glob.c
endif
# THIS DOES NOT WORK!
download:
ifeq (,$(wildcard ./glob.c))
curl … -o glob.c
e...
How does the vim “write with sudo” trick work?
... :w !sudo tee %...
% means "the current file"
As eugene y pointed out, % does indeed mean "the current file name", which is passed to tee so that it knows which file to overwrite.
(In substitution commands, it's slightly different; as :help :% shows, it's equal to 1,$ (the entire file) (thanks to...
What does the 'b' character do in front of a string literal?
...ytes in 3.x) from text strings (which should be str in 3.x). The b prefix does nothing in 2.x, but tells the 2to3 script not to convert it to a Unicode string in 3.x.
So yes, b'...' literals in Python have the same purpose that they do in PHP.
Also, just out of curiosity, are there
more symbols th...
What does Visual Studio mean by normalize inconsistent line endings?
...
how does the line end without a carriage return... ?
– CloudMeta
Feb 16 '09 at 15:03
24
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Does PNG contain EXIF data like JPG?
...emains to be seen if encoders-decoders begin to support it.
Original: PNG does not embed EXIF info. It allows, however, to embed metadata "chunks" inside the image. Some of the standardized chunks correspond to a few EXIF attributes (physical dimensions, timestamp). And it's also possible to store ...
How to send a custom http status message in node / express?
...
You can check this res.send(400, 'Current password does not match')
Look express 3.x docs for details
UPDATE for Expressjs 4.x
Use this way (look express 4.x docs):
res.status(400).send('Current password does not match');
// or
res.status(400);
res.send('Current password d...
Does a method's signature in Java include its return type?
Does the method signature in a Java class/interface include its return type?
14 Answers
...
When to use volatile with multi threading?
...e only that one thread can access the variable, in which case the variable doesn't need to be volatile?
5 Answers
...
Hidden Features of VB.NET?
...ed to create own Enum-like types with extended functionality. This feature doesn't work in C#, though.
One example from a recent code of mine:
'
''' <completionlist cref="RuleTemplates"/>
Public Class Rule
Private ReadOnly m_Expression As String
Private ReadOnly m_Options As RegexOpt...