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Assertions and testing emptiness of iterables

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#python #assert #truthiness
37.4k
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Is !! a best practice to check a truthy value in an if statement

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#javascript #angularjs #truthiness
134
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How to check "truthyness" of an object, and then delete the falsy ones and edit the object

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#javascript #object #truthiness
2.9k
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Determining "Truthiness" of an expression?

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#ruby #truthiness
480
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Returning the truthiness of a variable rather than its value?

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#python #string #boolean #truthiness
2.6k
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how to check xpath expression (if valid/not) before scraping data with spider

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#python-2.7 #xpath #scrapy #truthiness
204
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Conditional value (like while loop) as method parameter

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#objective-c #loops #boolean #truthiness
121
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Is //(typeof(myVar) != "undefined")// logically equivalent to the truthy //if (myVar)?

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#javascript #truthiness
160
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comparing with `{}` and truthyness

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#javascript #comparison #truthiness
674
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Why does {} == false throw an exception?

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748
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Is !obj[key] a good practice to check the existence of an object's property in JavaScript?

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#javascript #properties #hasownproperty #truthiness
1.4k
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When can self == None

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#python #nonetype #truthiness
658
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How can I create a Proc to checking whether the elements of an array are nil or not?

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#arrays #ruby #proc #truthiness
176
Views

Why would a truthy check on an enum value not work like I expect?

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#ruby-on-rails #ruby #ruby-on-rails-4 #enums #truthiness
961
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How can I avoid truthiness in Ruby?

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#ruby #truthiness
283
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Iterate collection for truthy/falsey values

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#javascript #loops #collections #truthiness
37
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Checking lots of variables for truthiness in a single pass

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#javascript #if-statement #variables #truthiness #ecmascript-2020
1.2k
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Typescript optional function truthy check

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#typescript #optional-parameters #truthiness
107
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When I am testing for truthiness, why is my Object.create(null) value true while null is false?

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#javascript #null #equality #type-coercion #truthiness
396
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If ([] == false) is true, why does ([] || true) result in []?

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#javascript #comparison #truthiness

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