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How to check if a file exists in Documents folder?
... if it was a main application you'll have access to the entire file system and you'll use the shared Documents directory. If you install it via iTunes or XCode you'll be using your applications' personal directory. It's nice to store files in your local directory for backup purposes.
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Difference between TCP and UDP?
...TCP is a connection oriented stream over an IP network. It guarantees that all sent packets will reach the destination in the correct order. This imply the use of acknowledgement packets sent back to the sender, and automatic retransmission, causing additional delays and a general less efficient tra...
How to POST raw whole JSON in the body of a Retrofit request?
...s JSON as the sole body of the request.
public class FooRequest {
final String foo;
final String bar;
FooRequest(String foo, String bar) {
this.foo = foo;
this.bar = bar;
}
}
Calling with:
FooResponse = foo.postJson(new FooRequest("kit", "kat"));
Will yield the following body:...
How to make a class conform to a protocol in Swift?
...aSource'
Is expected. You will get the error until your class implements all required methods of the protocol.
So get coding :)
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How do I view the list of functions a Linux shared library is exporting?
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What you need is nm and its -D option:
$ nm -D /usr/lib/libopenal.so.1
.
.
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00012ea0 T alcSetThreadContext
000140f0 T alcSuspendContext
U atanf
U calloc
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Exported sumbols are indicated by a T. Required symbols that mus...
“The breakpoint will not currently be hit. The source code is different from the original version.”
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Using clean does not always work. I had to manually delete everything in my bin folder to get it to work again.
– Carra
May 4 '12 at 13:53
3
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Why are empty strings returned in split() results?
... so
"/".join(['', 'segment', 'segment', ''])
gets you back the original string.
If the empty strings were not there, the first and last '/' would be missing after the join()
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how to get the last character of a string?
How to get the last character of the string:
12 Answers
12
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Replace first occurrence of pattern in a string [duplicate]
Let's say I have the string:
3 Answers
3
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How do you use String.substringWithRange? (or, how do Ranges work in Swift?)
I have not yet been able to figure out how to get a substring of a String in Swift:
33 Answers
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