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How do I move the turtle in LOGO? [closed]
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NODRAW [ND] - Enter text mode with clear screen
NOWRAP - Prevent drawings from wrapping around screen
PENCOLOR [PC] - Change pen color
PENDOWN [PD] - Turtle leaves trail
PENUP [PU] - Turtle ceases to leave trail
RIGHT ## [RT] - Turn turtle right
SETHEADING [SETH] - Set turtle heading, e.g. SETH 180...
In where shall I use isset() and !empty()
...e isset() is not an effective way to validate text inputs and text boxes from a HTML form.
17 Answers
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Plotting time in Python with Matplotlib
...he year is set to 1990": Could you please post the code you use to convert from string to datetime? Something might be wrong with the conversion. Re. the formatting of chart labels, see the date_demo1 link provided by J. K. Seppänen. The matplot lib documentation is excellent, BTW. matplotlib.sourc...
How to print without newline or space?
...ue keyword argument:
print('.', end='', flush=True)
Python 2.6 and 2.7
From Python 2.6 you can either import the print function from Python 3 using the __future__ module:
from __future__ import print_function
which allows you to use the Python 3 solution above.
However, note that the flush k...
mongodb, replicates and error: { “$err” : “not master and slaveOk=false”, “code” : 13435 }
...t "slave okay" mode to let the mongo shell know that you're allowing reads from a secondary. This is to protect you and your applications from performing eventually consistent reads by accident. You can do this in the shell with:
rs.slaveOk()
After that you can query normally from secondaries.
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php - get numeric index of associative array
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How is this any different from @quantamSoup's answer?
– Mystical
Jan 21 '19 at 0:17
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How to find out which package version is loaded in R?
...es is the current version installed at the location the package was loaded from: it can be wrong if another process has been changing packages during the session." So: if you want to know wether the package is loaded or not, better use "Rmpi" %in% loadedNamespaces() ; if you want to know which versi...
Get month name from number
How can I get the month name from the month number?
12 Answers
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How does “304 Not Modified” work exactly?
...ts something in its cache, it also stores the Last-Modified or ETag header from the server.
The browser then sends a request with the If-Modified-Since or If-None-Match header, telling the server to send a 304 if the content still has that date or ETag.
The server needs some way of calculating a d...
pinpointing “conditional jump or move depends on uninitialized value(s)” valgrind message
So I've been getting some mysterious uninitialized values message from valgrind and it's been quite the mystery as of where the bad value originated from.
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