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How to check whether a variable is a class or not?
...ou couldn't perform the check in the first place.
– a_guest
Dec 16 '16 at 12:42
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Can I have multiple Xcode versions installed?
...lose Xcode if running
Rename /Applications/Xcode.app to /Applications/Xcode_6.x.app
Enter the admin password when prompted
Double click the DMG file of your required, pre-downloaded Xcode and install it
Once installed it, before running it, change the new
/Applications/Xcode.app that was just instal...
How do I delete from multiple tables using INNER JOIN in SQL server
...
John GibbJohn Gibb
9,71622 gold badges3232 silver badges4545 bronze badges
2
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Auto-center map with multiple markers in Google Maps API v3
...center your point:
//Example values of min & max latlng values
var lat_min = 1.3049337;
var lat_max = 1.3053515;
var lng_min = 103.2103116;
var lng_max = 103.8400188;
map.setCenter(new google.maps.LatLng(
((lat_max + lat_min) / 2.0),
((lng_max + lng_min) / 2.0)
));
map.fitBounds(new google...
Constants in Objective-C
...
You should create a header file like
// Constants.h
FOUNDATION_EXPORT NSString *const MyFirstConstant;
FOUNDATION_EXPORT NSString *const MySecondConstant;
//etc.
(you can use extern instead of FOUNDATION_EXPORT if your code will not be used in mixed C/C++ environments or on other plat...
How to specify the private SSH-key to use when executing shell command on Git?
...
answered Feb 17 '12 at 1:32
Joe BlockJoe Block
1,67611 gold badge1111 silver badges55 bronze badges
...
When to use LinkedList over ArrayList in Java?
...uch both lists take up for N null references.
Since references are either 32 or 64 bits (even when null) on their relative systems, I have included 4 sets of data for 32 and 64 bit LinkedLists and ArrayLists.
Note: The sizes shown for the ArrayList lines are for trimmed lists - In practice, the ca...
nginx error “conflicting server name” ignored [closed]
...
32
You have another server_name ec2-xx-xx-xxx-xxx.us-west-1.compute.amazonaws.com somewhere in the...
Python extract pattern matches
... (.*) is valid")
>>> result = p.search(s)
>>> result
<_sre.SRE_Match object at 0x10555e738>
>>> result.group(1) # group(1) will return the 1st capture (stuff within the brackets).
# group(0) will returned the entire matched text.
'my_user_...
How to increase font size in the Xcode editor?
To increase font-size in Xcode is a pain.
16 Answers
16
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