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How to check if a map contains a key in Go?
... the value of "foo" from the map or a "zero value" (in this case the empty string) and ok will receive a bool that will be set to true if "foo" was actually present in the map
evaluates ok, which will be true if "foo" was in the map
If "foo" is indeed present in the map, the body of the if stateme...
Pythonic way to print list items
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To add format(), replace the str(x) with a format string: print " ".join(["{:02d}".format(x) for x in l])
– ChrisFreeman
Apr 26 '16 at 6:34
add a comm...
PHP Warning: PHP Startup: Unable to load dynamic library
...the php.ini file:
extension_dir = "\xampp\php\ext"
browscap = "\xampp\php\extras\browscap.ini"
to
extension_dir = "e:\xampp\php\ext"
browscap = "e:\xampp\php\extras\browscap.ini"
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impro...
How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”
How to get timestamp in string format in Java? "yyyy.MM.dd.HH.mm.ss"
7 Answers
7
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Is there an IDictionary implementation that, on missing key, returns the default value instead of th
... to get default value if key is not there in a dictionary.
Dictionary<string, string> colorData = new Dictionary<string, string>();
string color = colorData.GetValueOrDefault("colorId", string.Empty);
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What is the difference between typeof and instanceof and when should one be used vs. the other?
...f ClassSecond; // false
Use typeof for simple built in types:
'example string' instanceof String; // false
typeof 'example string' == 'string'; // true
'example string' instanceof Object; // false
typeof 'example string' == 'object'; // false
true instanceof Boolean; // false
typeof true == 'b...
In what areas might the use of F# be more appropriate than C#? [closed]
...y small F# features that made the task easier. Since you need to produce a string, I defined custom operators for building strings (using StringBuilder) and implemented the code using them and higher-order functions (e.g. to format list of objects separated using the specified string etc.), which re...
How do I install from a local cache with pip?
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pip wheel is an excellent option that does what you want with the extra feature of pre-compiling the packages. From the official docs:
Build wheels for a requirement (and all its dependencies):
$ pip wheel --wheel-dir=/tmp/wheelhouse SomePackage
Now your /tmp/wheelhouse directory...
A semantics for Bash scripts?
...are the scoping rules? What is the typing discipline, e.g. is everything a string? What is the state of the program -- is it a key-value assignment of strings to variable names; is there more than that, e.g. the stack? Is there a heap? And so on.
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How to generate a random string of a fixed length in Go?
I want a random string of characters only (uppercase or lowercase), no numbers, in Go. What is the fastest and simplest way to do this?
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