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How to check for an active Internet connection on iOS or macOS?
I would like to check to see if I have an Internet connection on iOS using the Cocoa Touch libraries or on macOS using the Cocoa libraries.
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Casting to string in JavaScript
...le: I've got a log function that can be called with an arbitrary number of parameters: log("foo is {} and bar is {}", param1, param2). If a DEBUG flag is set to true, the brackets get replaced by the given parameters and the string is passed to console.log(msg). Parameters can and will be Strings, N...
How do I deserialize a JSON string into an NSDictionary? (For iOS 5+)
In my iOS 5 app, I have an NSString that contains a JSON string. I would like to deserialize that JSON string representation into a native NSDictionary object.
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Default argument values in JavaScript functions [duplicate]
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In javascript you can call a function (even if it has parameters) without parameters.
So you can add default values like this:
function func(a, b){
if (typeof(a)==='undefined') a = 10;
if (typeof(b)==='undefined') b = 20;
//your code
}
and then you can call it like...
Copying files from one directory to another in Java
...irectory in the dir directory, which I have created right before the iteration.
In the code, I want to copy the review (which represents the ith text file or review) to trainingDir . How can I do this? There seems not to be such a function (or I couldn't find). Thank you.
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Recursively list files in Java
...ay to traverse files. Since it's a stream you can do all nice stream operations on the result such as limit, grouping, mapping, exit early etc.
UPDATE: I might point out there is also Files.find which takes a BiPredicate that could be more efficient if you need to check file attributes.
Files.find...
Change Volley timeout duration
...ry a particular request when a timeout happens.
It deals with these three parameters
Timeout - Specifies Socket Timeout in millis per every retry attempt.
Number Of Retries - Number of times retry is attempted.
Back Off Multiplier - A multiplier which is used to determine exponential time set to ...
How to write DataFrame to postgres table?
...l, sqlite and oracle databases. I cant pass to this method postgres connection or sqlalchemy engine.
5 Answers
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How can I convert an image into a Base64 string?
...an older SDK library (because you want it to work on phones with older versions of the OS) you won't have the Base64 class packaged in (since it just came out in API level 8 AKA version 2.2).
Check this article out for a workaround:
How to base64 encode decode Android
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How to attach javadoc or sources to jars in libs folder?
New version of ADT r17 plugin for Eclipse added feature to automatically setup JAR dependencies. Any .jar files in the /libs folder are added to the build configuration now. Unfortunately Android Dependencies classpath container is non modifiable.
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