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Split a List into smaller lists of N size
I am attempting to split a list into a series of smaller lists.
17 Answers
17
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What is a good regular expression to match a URL? [duplicate]
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I changed your expression a bit so it will work in all cases i need, including uri with http:// or www "/([^\s\.]+\.[^\s]{2,}|www\.[^\s]+\.[^\s]{2,})/gi"
– Ismael
Jan 14 '15 at 11:08
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Django removing object from ManyToMany relationship
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If you need to remove all M2M references without touching the underlying objects, it's easier to work from the other direction:
interest.mood_set.clear()
While this does not directly address the OP's question, it's often useful in this situatio...
Running a command as Administrator using PowerShell?
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well, technically speaking, everything is "one line" if formatted like that, but that does not make it actual "one line"
– illegal-immigrant
Feb 16 '16 at 22:08
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Python threading.timer - repeat function every 'n' seconds
... not self.stopped.wait(0.5):
print("my thread")
# call a function
In the code that started the timer, you can then set the stopped event to stop the timer.
stopFlag = Event()
thread = MyThread(stopFlag)
thread.start()
# this will stop the timer
stopFlag.set()
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In PHP, why does not show a parse error?
...t;? ... ?> (known as short_open_tag)
<?php ... ?> (the standard really)
<script language="php"> ... </script> (not recommended)
<% ... %> (deprecated and removed ASP-style tag after 5.3.0)
Apparently, you can open a PHP block one way, and close it the other. Didn't know ...
Import pandas dataframe column as string not int
...import the following csv as strings not as int64. Pandas read_csv automatically converts it to int64, but I need this column as string.
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Installing older version of R package
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To install an older version of a package from source (within R):
packageurl <- "http://cran.r-project.org/src/contrib/Archive/ggplot2/ggplot2_0.9.1.tar.gz"
install.packages(packageurl, repos=NULL, type="source")
If this doesn'...
How do I check CPU and Memory Usage in Java?
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If you are looking specifically for memory in JVM:
Runtime runtime = Runtime.getRuntime();
NumberFormat format = NumberFormat.getInstance();
StringBuilder sb = new StringBuilder();
long maxMemory = runtime.maxMemory();
long allocatedMemory = runtime...
Direct casting vs 'as' operator?
... tend to almost never use 2 since if something is not the right type, I usually expect an exception to occur. I have only seen a need for this return-null type of functionality with badly designed libraries which use error codes (e.g. return null = error, instead of using exceptions).
3 is not a ca...