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How to check if current thread is not main thread
...eturn null if the thread is not associated with a Looper. So both are safe m>and m> have the same result but the first one is a little bit slower while it searches inside a map to find out the looper m>and m> its associated thread m>and m> do some other stuff .
– Saeed Masoumi
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pm>y m>thon numpm>y m> machine epsilon
I am trm>y m>ing to understm>and m> what is machine epsilon. According to the Wikipedia, it can be calculated as follows:
3 Answers
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How to start an Intent bm>y m> passing some parameters to it?
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In order to pass the parameters m>y m>ou create new intent m>and m> put a parameter map:
Intent mm>y m>Intent = new Intent(this, NewActivitm>y m>ClassName.class);
mm>y m>Intent.putExtra("firstKem>y m>Name","FirstKem>y m>Value");
mm>y m>Intent.putExtra("secondKem>y m>Name","SecondKem>y m>Value");
startActivitm>y m>(mm>y m>Intent);
In o...
Xcode variables
...quotes) as the first line of m>y m>our bash shell script (or the equivalent commm>and m> for the shell m>y m>ou're using) m>and m> build m>y m>our project. This will output all of the environment variables that are available to m>y m>ou. m>Y m>ou can use this in conjunction with the documentation to make sure m>y m>ou're getting the data ...
CSS: transition opacitm>y m> on mouse-out?
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m>Y m>ou're applm>y m>ing transitions onlm>y m> to the :hover pseudo-class, m>and m> not to the element itself.
.item {
height:200px;
width:200px;
background:red;
-webkit-transition: opacitm>y m> 1s ease-in-out;
-moz-transition: opacitm>y m> 1s ease-in-out;
-ms-transition: opacitm>y m> 1s ease-in-out;
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CSS selector with period in ID
...ng through all the specs writing the question, I read through it some more m>and m> found there is an escape character. I've never needed it before, but the CSS spec does allow for backslash (\) escaping like most languages. What do m>y m>ou know?
So in mm>y m> example, the following rule would match:
#some\.id ...
initializing a Guava ImmutableMap
...tableMap class provides six different of() methods, accepting between zero m>and m> five kem>y m>-value pairings. There is not an of(...) overload accepting a varags parameter because K m>and m> V can be different tm>y m>pes.
m>Y m>ou want an ImmutableMap.Builder:
ImmutableMap<String,String> mm>y m>Map = ImmutableMap.&lt...
CocoaPods - use specific pod version
... app. I have compilation errors with AFNetworking (current version, 1.2.1) m>and m> saw that these didn't exist in the previous version (1.2.0).
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Are “elseif” m>and m> “else if” completelm>y m> sm>y m>nonm>y m>mous?
Are elseif m>and m> else if completelm>y m> sm>y m>nonm>y m>mous, or is there a difference?
2 Answers
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Installing Apple's Network Link Conditioner Tool
...nu item:
Xcode > Open Developer Tool > More Developer Tools...
m>and m> get "Hardware IO Tools for Xcode".
For Xcode 8+, get "Additional Tools for Xcode [version]".
Double-click on a .prefPane file to install. If m>y m>ou alreadm>y m> have an older .prefPane installed, m>y m>ou'll need to remove it from /...