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How does one make an optional closure in swift?
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Do you know what the rationale is for having to enclose it in parenthesis?
– Marcosc
Jun 24 '14 at 20:56
5
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getApplication() vs. getApplicationContext()
...text.getApplicationContext() when
first constructing the singleton.
I know this is not an exact and precise answer, but still, does that answer your question?
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iPhone 5 CSS media query
.../667 and it worked on the physical device.
– do what now
Oct 9 '15 at 17:43
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What's the best practice to round a float to 2 decimals? [duplicate]
...that allows you to round a number to the number of decimals that you want. Now you need two, but maybe you would like to try with 3 to compare results, and this function gives you this freedom.
/**
* Round to certain number of decimals
*
* @param d
* @param decimalPlace
* @return
*/
public stati...
Error when testing on iOS simulator: Couldn't register with the bootstrap server
...ed debugging there, made some changes to the code and built the app again. Now when I run the application, I get this error in the console
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What is the benefit of using $() instead of backticks in shell scripts?
...> parent=$(basename $(dirname $PWD))
pax> echo $parent
xyzzy
(a) Now that specific command may not actually work, I haven't tested the functionality. So, if you vote me down for it, you've lost sight of the intent :-) It's meant just as an illustration as to how you can nest, not as a bug-...
Data access object (DAO) in Java
...he DAO once we get what we want from the database. Am i right?? and may i know the Scope of this DAO concept rami??
– Vasanth Nag K V
Oct 4 '13 at 6:12
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How can I exclude directories from grep -R?
...gt;/dev/null \;
SOLUTION 2 (using the --exclude-dir option of grep):
You know this solution already, but I add it since it's the most recent and efficient solution. Note this is a less portable solution but more human-readable.
grep -R --exclude-dir=node_modules 'some pattern' /path/to/search
To e...
How do I push amended commit to the remote Git repository?
...wo people pushing to the same repository at about the same time would not know that there was a new commit coming in at the same time and whoever pushed last would lose the work of the previous pusher without either of them realising this.
If you know that you are the only person pushing and you wa...
When to use: Java 8+ interface default method, vs. abstract method
...venience methods, thus constraining the implementor to single inheritance, now you can have a really clean design with just the interface and a minimum of implementation effort forced on the programmer.
The original motivation to introduce default methods to Java 8 was the desire to extend the Coll...