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Viewing all defined variables [duplicate]
... been defined up to a point (so I know which names I've used, their values and such).
10 Answers
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Number of days between two NSDates [duplicate]
...ays between two dates:
+ (NSInteger)daysBetweenDate:(NSDate*)fromDateTime andDate:(NSDate*)toDateTime
{
NSDate *fromDate;
NSDate *toDate;
NSCalendar *calendar = [NSCalendar currentCalendar];
[calendar rangeOfUnit:NSCalendarUnitDay startDate:&fromDate
interval:NULL forD...
“Keep Me Logged In” - the best approach
... uses sessions to store information about the user once they've logged in, and to maintain that information as they travel from page to page within the app. In this specific application, I'm storing the user_id , first_name and last_name of the person.
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How do I add a foreign key to an existing SQLite table?
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SQLite doesn't support the ADD CONSTRAINT variant of the ALTER TABLE command (sqlite.org: SQL Features That SQLite Does Not Implement).
Therefore, the only way to add a foreign key in sqlite 3.6.1 is during CREATE TABLE as follows:
CREATE TABLE child (
id INTEGER PRIMARY KEY,
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In which scenario do I use a particular STL container?
...p on STL containers in my book on C++, specifically the section on the STL and its containers. Now I do understand each and every one of them have their own specific properties, and I'm close to memorizing all of them... But what I do not yet grasp is in which scenario each of them is used.
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What is the difference between MOV and LEA?
...urpose of LEA is to allow one to perform a non-trivial address calculation and store the result [for later usage]
LEA ax, [BP+SI+5] ; Compute address of value
MOV ax, [BP+SI+5] ; Load value at that address
Where there are just constants involved, MOV (through the assembler's constant calculation...
Multiple simultaneous downloads using Wget?
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Don't forget -s to specify the number of splits, and -k to specify the minimum size per split segment - otherwise you might never reach the -x max connections.
– Bob
Mar 11 '14 at 13:16
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What is the difference between AF_INET and PF_INET in socket programming?
What is the difference between AF_INET and PF_INET in socket programming?
7 Answers
7
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How to build a Debian/Ubuntu package from source?
I have the source of a program (taken from cvs/svn/git/...) and I'd like to build a Debian/Ubuntu package for it. The package is present in the repositories, but:
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WPF Blurry fonts issue- Solutions
Problem is described and demonstrated on the following links:
11 Answers
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