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typedef struct vs struct definitions [duplicate]
...a typedef can make C code more C++-like. In C++, structs (and classes, and unions, and enums) are referred to using a name that's a single identifier. Referring to a type as struct foo is more C-like.
– Keith Thompson
Feb 9 at 22:19
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Are soft deletes a good idea? [duplicate]
...iew called recycle_bin or similar that shows only deleted records (doing a union on tables that do soft deletes on their common fields)
– Neil McGuigan
Jan 29 '12 at 10:25
2
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Rails has_and_belongs_to_many migration
...e. From the docs
By default, the name of the join table comes from the union of the
first two arguments provided to create_join_table, in alphabetical
order. To customize the name of the table, provide a :table_name
option:
...
conditional unique constraint
... records to a table that lacks the constraint, and perhaps use a view with UNION of the two tables to preserve the appearance of a single table.
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Retrieve specific commit from a remote Git repository
...ubmodule pointer).
Only objects reachable from the branch tips, i.e. the union of advertised branches and branches hidden by transfer.hideRefs, will be processed.
Note that there is an associated cost of having to walk back the history to check the reachability.
This feature can be used whe...
What is Full Text Search vs LIKE
...ntain the term. Full text search is optimized to compute the intersection, union, etc. of these record sets, and usually provides a ranking algorithm to quantify how strongly a given record matches search keywords.
The SQL LIKE operator can be extremely inefficient. If you apply it to an un-indexed...
What happens to a declared, uninitialized variable in C? Does it have a value?
... is initialized
(recursively) according to these
rules; — if it is a union, the first
named member is initialized
(recursively) according to these
rules.
As to what exactly indeterminate means, I'm not sure for C89, C99 says:
3.17.2 indeterminate valueeither an unspecified value or...
C char array initialization
...y way at any time in the program, provided they are members of a struct or union.
Example program:
#include <stdio.h>
struct ccont
{
char array[32];
};
struct icont
{
int array[32];
};
int main()
{
int cnt;
char carray[32] = { 'A', 66, 6*11+1 }; // 'A', 'B', 'C', '\0', '\0', ....
Java generics type erasure: when and what happens?
...s (Java Reference Types which are subtypeable, Any Type in many languages, Union Types).
The reason for type erasure is that programs get transformed to a language which is in some kind uni-typed (binary language only allowing bits) as types are abstractions only and assert a structure for its value...
What are the differences between double-dot “..” and triple-dot “…” in Git diff commit ranges?
...eturns the intersection (white part of the diagram) or the rest of the A-B union (green). It would be more to the point without any set operands and with only 1 color.
– xealits
Jan 30 '18 at 11:41
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