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iOS: how to perform a HTTP POST request?
...g iOS development and I'd like to have one of my first applications to perform a HTTP POST request.
7 Answers
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Decoding JSON using json.Unmarshal vs json.NewDecoder.Decode
... the Decode method of json.Decoder, it buffers the entire JSON value in memory before unmarshalling it into a Go value. So in most cases it won't be any more memory efficient (although this could easily change in a future version of the language).
So a better rule of thumb is this:
Use json.Deco...
How to sort a dataframe by multiple column(s)
I want to sort a data.frame by multiple columns. For example, with the data.frame below I would like to sort by column z (descending) then by column b (ascending):
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Where does Scala look for implicits?
... question to newcomers to Scala seems to be: where does the compiler look for implicits? I mean implicit because the question never seems to get fully formed, as if there weren't words for it. :-) For example, where do the values for integral below come from?
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How do I make the first letter of a string uppercase in JavaScript?
...e function with that same name in future).
...and then, there is so much more to this question when you consider internationalisation, as this astonishingly good answer (buried below) shows.
If you want to work with Unicode code points instead of code units (for example to handle Unicode character...
Is there any difference between __DIR__ and dirname(__FILE__) in PHP?
It looks the same for me,but I'm not sure,
1 Answer
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What is an uber jar?
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Über is the German word for above or over (it's actually cognate with the English over).
Hence, in this context, an uber-jar is an "over-jar", one level up from a simple JAR (a), defined as one that contains both your package and all its depend...
Django: How to completely uninstall a Django app?
What is the procedure for completely uninstalling a Django app, complete with database removal?
5 Answers
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How can I get System variable value in Java?
...ser logs on.
To access either the current value of a system wide variable or a user variable in Java, see below:
String javaHome = System.getenv("JAVA_HOME");
For more information on environment variables see this wikipedia page.
Also make sure the environment variable you are trying to read is...
Purpose of #!/usr/bin/python3
...of scripting languages, but in this example, I am using python. In many tutorials, they would start with #!/usr/bin/python3 on the first line. I don't understand why we have this.
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