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Can virtual functions have default parameters?
...e a public non-virtual function in the base class with default parameters. Then it calls a private or protected virtual function that has no default parameters and is overridden in child classes as needed. Then you don't have to worry about the particulars of how it would work and the code is very o...
How to draw a rounded Rectangle on HTML Canvas?
...
Zig Mandel is correct: it should be filled and then stroked. The reason is that if you stroke and then fill then the line width is halved. Try it with a really thick line width (say, 20) and compare a rounded rectangle which is filled with the background colour to a rou...
How do I update zsh to the latest version?
...st version of the ZSH sourcecode
Untar the download into its own directory then install: ./configure && make && make test && sudo make install
This installs the the zsh binary at /usr/local/bin/zsh.
You can now use the shell by loading up a new terminal and executing the bina...
Alias with variable in bash [duplicate]
...
I'd create a function for that, rather than alias, and then exported it, like this:
function tail_ls { ls -l "$1" | tail; }
export -f tail_ls
Note -f switch to export: it tells it that you are exporting a function. Put this in your .bashrc and you are good to go.
...
How do I split a string so I can access item x?
... @str,
a,
case when b > 0 then b-a ELSE 4000 end)
AS s
from tokens
)
GO
Then, use it as any table (or modify it to fit within your existing stored proc) like this.
select s
from dbo.SplitString('Hello John Smith', '...
How to change variables value while debugging with LLDB in Xcode?
...ode 8.
If you want to set some variable (for example a "dict") to nil and then test the code flow, you can try the following.
Put the breakpoint properly after initialised to the desired value.
then execute "expression dict = nil" in lldb command line to change it. (for example "nil")
Step ove...
Using global variables in a function
... has already been mentioned, if you add a 'global' declaration to func1(), then func2() will print 42.
def func1():
global myGlobal
myGlobal = 42
What's going on here is that Python assumes that any name that is assigned to, anywhere within a function, is local to that function unless exp...
AngularJS : What is a factory?
... the metal" version. I believe Value is a way to define constants that can then be used application wide.
– Jonathan Palumbo
May 16 '13 at 20:23
...
iPad Web App: Detect Virtual Keyboard Using JavaScript in Safari?
...ng suddenly works. So I can set scrollTop, immediately test its value, and then reset it. Here's how that might look in code, using jQuery:
$(document).ready(function(){
$('input').bind('focus',function() {
$(window).scrollTop(10);
var keyboard_shown = $(window).scrollTop() >...
What is the difference between Reader and InputStream?
...ed for character streams. If the information you are reading is all text, then the Reader will take care of the character decoding for you and give you unicode characters from the raw input stream. If you are reading any type of text, this is the stream to use.
You can wrap an InputStream and tur...