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What does {0} mean when initializing an object?
...0} will not work. Ex: struct A { B b; int i; char c; }; struct B { B(); B(string); }; A a = {}; // this statement cannot be rewritten as 'A a = {0}'.
– Aaron
Sep 23 '08 at 15:45
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How expensive is RTTI?
...endl;
Standard RTTI is expensive because it relies on doing a underlying string compare and thus the speed of RTTI can vary depending on the class name length.
The reason why string compares are used is to make it work consistently across library/DLL boundaries. If you build your application stat...
UnicodeEncodeError: 'latin-1' codec can't encode character
...aracter to be used. You should also ideally tell MySQL you are using UTF-8 strings (by setting the database connection and the collation on string columns), so it can get case-insensitive comparison and sorting right.
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Convert a string representation of a hex dump to a byte array using Java?
I am looking for a way to convert a long string (from a dump), that represents hex values into a byte array.
24 Answers
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How to enter quotes in a Java string?
I want to initialize a String in Java, but that string needs to include quotes; for example: "ROM" . I tried doing:
10 Ans...
List of all special characters that need to be escaped in a regex
... It's safer to escape it. For example, the patterns [-] and [-)] match the string - but not with [(-)].
– Kenston Choi
Sep 12 '16 at 5:28
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Best way to simulate “group by” from bash?
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People looking for "group by" with string concatenation instead of number addition would replace arr[$1,$2]+=$3+$4 with e.g. arr[$1,$2]=(arr[$1,$2] $3 "," $4). I needed this to provide a grouped-by-package list of files (two columns only) and used: arr[$1]=(ar...
What is the best way to prevent session hijacking?
... work but here goes: Add a serial number into your session cookie, maybe a string like this:
SessionUUID, Serial Num, Current Date/Time
Encrypt this string and use it as your session cookie. Regularly change the serial num - maybe when the cookie is 5 minutes old and then reissue the cookie. You ...
How does Stack Overflow generate its SEO-friendly URLs?
...uted
/// by John Gietzen (user otac0n)
/// </summary>
public static string URLFriendly(string title)
{
if (title == null) return "";
const int maxlen = 80;
int len = title.Length;
bool prevdash = false;
var sb = new StringBuilder(len);
char c;
for (int i = 0; i &...
Python json.loads shows ValueError: Extra data
...n27\lib\json\decoder.py", line 368, in decode
raise ValueError(errmsg("Extra data", s, end, len(s)))
ValueError: Extra data: line 1 column 3 - line 1 column 5 (char 2 - 4)
If you want to dump multiple dictionaries, wrap them in a list, dump the list (instead of dumping dictionaries multiple ti...