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Should you ever use protected member variables?
... cannot allow any method in your class to rely on its value being within a range, because a subclass can always place it out of range.
For example, if I have a class that defines width and height of a renderable object, and I make those variables protected, I then can make no assumptions over (for ...
Check if value is in select list with JQuery
...g any character, including ] and `\`. Avoid building selector strings from raw text without doing proper CSS-escaping.
– bobince
Feb 12 '10 at 1:28
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right click context menu for datagridview
...mics the approach used by Microsoft Excel. If a cell is part of a selected range, the cell selection doesn't change and neither does CurrentCell. If it isn't, the old range is cleared and the cell is selected and becomes CurrentCell.
If you are unclear on this, CurrentCell is where the keyboard has...
What's the difference between integer class and numeric class in R
...rrent implementations of R use 32-bit integers for integer vectors, so the range of representable integers is restricted to about +/-2*10^9: doubles can hold much larger integers exactly.
Like the help page says, R's integers are signed 32-bit numbers so can hold between -2147483648 and +2147483647...
How do I install cygwin components from the command line?
...above
steps and then use Cygwin Bash for the following steps
wget https://raw.githubusercontent.com/transcode-open/apt-cyg/master/apt-cyg
chmod +x apt-cyg
mv apt-cyg /usr/local/bin
Now that apt-cyg is installed. Here are few examples of
installing some packages
apt-cyg install nano
apt-cyg insta...
Regex: Specify “space or start of string” and “space or end of string”
...
For Python it helps to specify it a raw string, e.g. mystr = r'\bstack overflow\b'
– Acumenus
Mar 26 '19 at 15:33
add a comment
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Calling class staticmethod within the class body?
...icmethod objects apparently have a __func__ attribute storing the original raw function (makes sense that they had to). So this will work:
class Klass(object):
@staticmethod # use as decorator
def stat_func():
return 42
_ANS = stat_func.__func__() # call the staticmethod
...
How to drop into REPL (Read, Eval, Print, Loop) from Python code
... to instrument):
x = 0 # exit loop counter
while x == 0:
user_input = raw_input("Please enter a command, or press q to quit: ")
if user_input[0] == "q":
x = 1
else:
try:
print eval(user_input)
except:
print "I can't do that, Dave."
...
Remove unwanted parts from strings in a column
... @LucaGuarro from the python docs: "The r prefix, making the literal a raw string literal, is needed in this example because escape sequences in a normal “cooked” string literal that are not recognized by Python, as opposed to regular expressions, now result in a DeprecationWarning and will ...
Record file copy operation with Git
... Unlike the solution below, this doesn't work with change tracking in a range. Git log allows a range argument (git log -L123,456:file.xyz) that properly follows renames, but not copies, and you can't pass --follow in that case; also, AFAICT, this doesn't work with git blame.
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