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Difference between doseq and for in Clojure
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168
The difference is that for builds a lazy sequence and returns it while doseq is for executing ...
How do I add files without dots in them (all extension-less files) to the gitignore file?
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121
You can try a combination similar to:
*
!/**/
!*.*
That gitignore exclusion rule (a negated...
Why doesn't c++ have &&= or ||= for booleans?
...alent to the logical operations, as long as both operands are of type bool.1
Contrary to what other people have said here, a bool in C++ must never have a different value such as 2. When assigning that value to a bool, it will be converted to true as per the standard.
The only way to get an invali...
Object comparison in JavaScript [duplicate]
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10 Answers
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Active
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Looking for a clear definition of what a “tokenizer”, “parser” and...
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171
A tokenizer breaks a stream of text into tokens, usually by looking for whitespace (tabs, spac...
Combining two lists and removing duplicates, without removing duplicates in original list
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11 Answers
11
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How to initialize a private static const map in C++?
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10 Answers
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Fixing JavaScript Array functions in Internet Explorer (indexOf, forEach, etc.) [closed]
...function(owner) {
var that= this;
if (arguments.length<=1) {
return function() {
return that.apply(owner, arguments);
};
} else {
var args= Array.prototype.slice.call(arguments, 1);
return function() {
...
How do you delete an ActiveRecord object?
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It's destroy and destroy_all methods, like
user.destroy
User.find(15).destroy
User.destroy(15)
User.where(age: 20).destroy_all
User.destroy_all(age: 20)
Alternatively you can use delete and delete_all which won't enforce :before_destroy and :after_destroy callbacks or any dependent associ...