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Which is the best Linux C/C++ debugger (or front-end to gdb) to help teaching programming? [closed]
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ddd is a graphical front-end to gdb that is pretty nice. One of the down sides is a classic X interface, but I seem to recall it being pretty intuitive.
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How do I dump an object's fields to the console?
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Current link is broken, See this one ruby-doc.org/core-2.0/Object.html#method-i-inspect
– SamFlushing
Aug 26 '13 at 13:46
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System.currentTimeMillis() vs. new Date() vs. Calendar.getInstance().getTime()
...s that are inherent to dates and times (leap years, daylight savings, timezones, etc.).
It's generally a good idea to deal only with long timestamps or Date objects within your application, and only use Calendar when you actually need to perform date/time calculations, or to format dates for displa...
Total size of the contents of all the files in a directory [closed]
...ally counts the total size of all the data in files as if they were opened one by one and their bytes were counted. But yes, adding the -A parameter is required to count hidden files as well.
– anton_rh
Sep 24 '18 at 13:08
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What is an .inc and why use it?
...em in an includes folder has the same effect without the disadvantage mentioned above.
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Why do I get “Pickle - EOFError: Ran out of input” reading an empty file?
... = pickle.load(f)
This will over-write the pickled file. You might have done this by mistake before using:
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open(filename, 'rb') as f:
And then got the EOFError because the previous block of code over-wrote the cd.pkl file.
When working in Jupyter, or in the console (Spyder) I usually writ...
Apply multiple functions to multiple groupby columns
... a DataFrame to the applied function. Let's use a similar dataframe as the one from above
df = pd.DataFrame(np.random.rand(4,4), columns=list('abcd'))
df['group'] = [0, 0, 1, 1]
df
a b c d group
0 0.418500 0.030955 0.874869 0.145641 0
1 0.446069 0.9011...
How do I list the symbols in a .so file
...0000000000 w D *UND* 0000000000000000 _ITM_deregisterTMCloneTable
Or use readelf:
$ readelf -Ws libz.so
Symbol table '.dynsym' contains 112 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 0000000000000000 0 NOTYPE LOCAL DEFAULT UND
1:...
How can I test if a letter in a string is uppercase or lowercase using JavaScript?
...Case("Ü"))
assert(!isLowerCase("4"))
assert(!isLowerCase("_"))
To check one letter just call it using isLowerCase(str[charIndex])
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How to get a variable value if variable name is stored as string?
...me, whose value will be used where appropriate.
Note that flags set with one of the typeset family of commands (in
particular case transformations) are not applied to the value of name
used in this fashion.
If used with a nested parameter or command substitution, the result of
that will...