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Is the “struct hack” technically undefined behavior?
...sed as an array. It's passed to strcpy, in which case it decays to a plain char *, which happens to point to an object which can legally be interpreted as char [100]; inside the allocated object.
– R.. GitHub STOP HELPING ICE
Sep 14 '10 at 23:34
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Psql list all tables
...This is where the INFORMATION_SCHEMA comes to the rescue. To list tables:
SELECT table_name FROM information_schema.tables WHERE table_schema = 'public';
BTW, if you ever want to see what psql is doing in response to a backslash command, run psql with the -E flag. eg:
$ psql -E regress
regre...
Convert all first letter to upper case, rest lower for each word
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There's a couple of ways to go about converting the first char of a string to upper case.
The first way is to create a method that simply caps the first char and appends the rest of the string using a substring:
public string UppercaseFirst(string s)
{
return char.ToUp...
JSONDecodeError: Expecting value: line 1 column 1 (char 0)
I am getting error Expecting value: line 1 column 1 (char 0) when trying to decode JSON.
16 Answers
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Python, remove all non-alphabet chars from string
... MapReduce word count program. Problem is that there are many non-alphabet chars strewn about in the data, I have found this post Stripping everything but alphanumeric chars from a string in Python which shows a nice solution using regex, but I am not sure how to implement it
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Delete last char of string
...oupids.Length - 1);
MSDN:
String.Remove(Int32):
Deletes all the characters from this string beginning at a specified
position and continuing through the last position
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Check if a string contains one of 10 characters
I'm using C# and I want to check if a string contains one of ten characters, *, &, # etc etc.
6 Answers
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How to declare strings in C [duplicate]
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Strings in C are represented as arrays of characters.
char *p = "String";
You are declaring a pointer that points to a string stored some where in your program (modifying this string is undefined behavior) according to the C programming language 2 ed.
char p2[] =...
What is the difference between String.slice and String.substring?
...te #3:slice()==substring()
Using Negative Numbers as an Argument:
slice() selects characters starting from the end of the string
substr()selects characters starting from the end of the string
substring() Doesn't Perform
Note #3:slice()==substr()
if the First Argument is Greater than the Second:
sl...
How to convert byte array to string [duplicate]
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You can do it without dealing with encoding by using BlockCopy:
char[] chars = new char[bytes.Length / sizeof(char)];
System.Buffer.BlockCopy(bytes, 0, chars, 0, bytes.Length);
string str = new string(chars);
sha...