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Convert char to int in C and C++
...vert the character '0' -> 0, '1' -> 1, etc, you can write
char a = '4';
int ia = a - '0';
/* check here if ia is bounded by 0 and 9 */
Explanation:
a - '0' is equivalent to ((int)a) - ((int)'0'), which means the ascii values of the characters are subtracted from each other. Since 0 comes di...
Add new row to dataframe, at specific row-index, not appended?
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4 Answers
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Active
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Passing a std::array of unknown size to a function
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Andy ProwlAndy Prowl
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9
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Count occurrences of a char in a string using Bash
...ilename | wc -l)
– hek2mgl
Sep 11 '14 at 8:26
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@Amir What do you expect?
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static constructors in C++? I need to initialize private static objects
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Daniel EarwickerDaniel Earwicker
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How to install PyQt4 on Windows using pip?
I'm using Python 3.4 on Windows. When I run a script, it complains
13 Answers
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How to initialize std::vector from C-style array?
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240
Don't forget that you can treat pointers as iterators:
w_.assign(w, w + len);
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Kotlin secondary constructor
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94
Update: Since M11 (0.11.*) Kotlin supports secondary constructors.
For now Kotlin supports on...
Modulo operator with negative values [duplicate]
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From ISO14882:2011(e) 5.6-4:
The binary / operator yields the quotient, and the binary % operator
yields the remainder from the division of the first expression by the
second. If the second operand of / or % is zero the behavi...