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How to mkdir only if a directory does not already exist?
...is used for both files / directories and just checks existence. Also, they all return 0 upon success, so ! is redundant. Correct me if I'm wrong.
– alkar
Apr 27 '09 at 14:57
1
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wget command to download a file and save as a different filename
...ke wget -O - http://foo > file; file will be truncated immediately, and all downloaded content will be written there."
– user2913694
Jul 28 '15 at 15:35
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From Arraylist to Array
... edited Oct 23 '14 at 18:28
lgvalle
3,08711 gold badge1515 silver badges1313 bronze badges
answered Nov 1 '11 at 15:50
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XDocument or XmlDocument
...ment = new XElement(ns + "elementName");
// etc
LINQ to XML also works really well with LINQ - its construction model allows you to build elements with sequences of sub-elements really easily:
// Customers is a List<Customer>
XElement customersElement = new XElement("customers",
custome...
unsigned int vs. size_t
... static array of 8Gb).
The size_t type may be bigger than, equal to, or smaller than an unsigned int, and your compiler might make assumptions about it for optimization.
You may find more precise information in the C99 standard, section 7.17, a draft of which is available on the Internet in pdf fo...
Adding new column to existing DataFrame in Python pandas
... because if you have multiple rows, and you use the assignment, it assigns all rows of the new column with that value ( in your case e) which is usually undesirable.
– Paniz
Apr 27 '19 at 22:42
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MongoDB: update every document on one field
I have a collected named foo hypothetically.
4 Answers
4
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How do you get assembler output from C/C++ source in gcc?
...u like to write in NASM syntax though. objdump -drwC -Mintel | less or gcc foo.c -O1 -fverbose-asm -masm=intel -S -o- | less are useful. (See also How to remove “noise” from GCC/clang assembly output?). -masm=intel works with clang, too.
– Peter Cordes
Se...
Where to put include statements, header or source?
... if I include that header file in my source, then will my source file have all of the included files that were in my header? Or should I just include them in my source file only?
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Initializing a list to a known number of elements in Python [duplicate]
...st thing that comes to mind for me is:
verts = [None]*1000
But do you really need to preinitialize it?
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