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What's the longest possible worldwide phone number I should consider in SQL varchar(length) for phon
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Well considering there's no overhead difference between a varchar(30) and a varchar(100) if you're only storing 20 characters in each, err on the side of caution and just make it 50.
shar...
for each loop in Objective-C for accessing NSMutable dictionary
I am finding some difficulty in accessing mutable dictionary keys and values in Objective-C.
7 Answers
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How do I get the color from a hexadecimal color code using .NET?
...It's probably easier to use the Color.FromArgb method in this case though. If you use floating point alpha, you'd have to multiply by 255.
– Thorarin
Apr 18 '14 at 18:20
2
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How do I delete a local repository in git? [duplicate]
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Delete the .git directory in the root-directory of your repository if you only want to delete the git-related information (branches, versions).
If you want to delete everything (git-data, code, etc), just delete the whole directory.
.git directories are hidden by default, so you'll need to...
RSpec: describe, context, feature, scenario?
describe , context , feature , scenario : What is the difference(s) among the four and when do I use each one?
3 Answers...
Invoking JavaScript code in an iframe from the parent page
Basically, I have an iframe embedded in a page and the iframe has some JavaScript routines I need to invoke from the parent page.
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How do I make and use a Queue in Objective-C?
...t-in-first-out, so we remove objects from the head
- (id) dequeue {
// if ([self count] == 0) return nil; // to avoid raising exception (Quinn)
id headObject = [self objectAtIndex:0];
if (headObject != nil) {
[[headObject retain] autorelease]; // so it isn't dealloc'ed on remove
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How to calculate moving average without keeping the count and data-total?
... Beware that this is quite far from the common definition of average. If you set N = 5 and enter 5 5 samples, the average will be 0.67.
– Dan Dascalescu
Jan 9 '18 at 8:28
2
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Add a space (“ ”) after an element using :after
...anonymous inline boxes.
And from The 'white-space' processing model,
If a space (U+0020) at the end of a line has 'white-space' set to
'normal', 'nowrap', or 'pre-line', it is also removed.
Solution
So if you don't want the space to be removed, set white-space to pre or pre-wrap.
h2 ...
What is the largest Safe UDP Packet Size on the Internet
...or VPNs and the like) in order to route the packet to its destination. So if you do not know the MTU on your particular network path, it is best to leave a reasonable margin for other header information that you may not have anticipated. A 512-byte UDP payload is generally considered to do that, a...