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Does Ruby have a string.startswith(“abc”) built in method?
Does Ruby have a some_string.starts_with("abc") method that's built in?
4 Answers
4
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Difference between a Structure and a Union
...re that value.
union foo {
int a; // can't use both a and b at once
char b;
} foo;
struct bar {
int a; // can use both a and b simultaneously
char b;
} bar;
union foo x;
x.a = 3; // OK
x.b = 'c'; // NO! this affects the value of x.a!
struct bar y;
y.a = 3; // OK
y.b = 'c'; // OK
ed...
MySQL ERROR 1045 (28000): Access denied for user 'bill'@'localhost' (using password: YES)
...s as to why 'bill'@'localhost' matches ''@'localhost' like I was, an empty string effectively acts a wild card in MySQL's authentication algorithm.
– Dean Or
Aug 6 '13 at 4:14
2
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Why does ContentResolver.requestSync not trigger a sync?
...sync contacts using a com.google style account.
All your contentAuthority strings have to all match, and match with what you're syncing -- This should be a string you define, if you're creating your own database, or you should use some existing device strings if you're syncing known data types (lik...
Response.Redirect with POST instead of Get?
...
You can use this aproach:
Response.Clear();
StringBuilder sb = new StringBuilder();
sb.Append("<html>");
sb.AppendFormat(@"<body onload='document.forms[""form""].submit()'>");
sb.AppendFormat("<form name='form' action='{0}' method='post'>",postbackUrl...
Proper way to handle multiple forms on one page in Django
...t instantiates these, without using either the messages framework or query strings? This answer seems the closest, but here it's still just one view handling both forms: stackoverflow.com/a/21271659/2532070
– YPCrumble
Oct 15 '14 at 10:10
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What are free monads?
...gives you a way to "get out" of it.
More generally, if X is a Y with some extra stuff P, then a "free X" is a a way of getting from a Y to an X without gaining anything extra.
Examples: a monoid (X) is a set (Y) with extra structure (P) that basically says it has an operation (you can think of add...
Why does Git treat this text file as a binary file?
...ut need of a null (00h) byte for anything other than the nul char (the 'C' string terminator). Thus Git's text definition is that the content (well the first 1k bytes) should not have a null byte when utf-8 encoded. Try stackoverflow.com/questions/2241348/… for a fun read. My original comment ref...
IntelliJ inspection gives “Cannot resolve symbol” but still compiles code
...ehow didn't clear out the old .iml files under .idea/modules. Delete those extra .iml file and rebuild the project fixed the issue.
– Chen
Dec 14 '18 at 16:10
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Unsigned keyword in C++
...ng -> signed long
signed long
unsigned long
Be careful of char:
char (is signed or unsigned depending on the implmentation)
signed char
unsigned char
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