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How to validate date with format “mm/dd/yyyy” in JavaScript?

..., I think the following date validation function is a little bit easier to read: // Validates that the input string is a valid date formatted as "mm/dd/yyyy" function isValidDate(dateString) { // First check for the pattern if(!/^\d{1,2}\/\d{1,2}\/\d{4}$/.test(dateString)) return fa...
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How can I reconcile detached HEAD with master/origin?

...h .git/HEAD, and when we wanted to find out which branch we are on, we did readlink .git/HEAD. But symbolic links are not entirely portable, so they are now deprecated and symbolic refs (as described above) are used by default." – Dmitry Minkovsky Aug 2 '13 at ...
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Renaming files in a folder to sequential numbers

... Beauty in one line: ls -v | cat -n | while read n f; do mv -n "$f" "$n.ext"; done You can change .ext with .png, .jpg, etc. share | improve this answer | ...
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What exactly is Spring Framework for? [closed]

...r; This way when the view is created it magically will have a UserLister ready to work. List<User> users = userLister.getUsers(); // This will actually work // without adding any line of code It is great! Isn't it? What if you want to use anot...
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What is the scope of variables in JavaScript?

...ck or function). However, variables declared using let and const cannot be read or assigned to until control has passed the point of declaration in the source code. The interim period is known as the temporal dead zone. function f() { function g() { console.log(x) } let x = 1...
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versionCode vs versionName in Android Manifest

...sionCode attribute holds the significant version number used internally. Reading that it's pretty clear that versionName is just something that's shown to the user, versionCode is what matters. Just keep increasing it and everything should be good. ...
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How can I use threading in Python?

I am trying to understand threading in Python. I've looked at the documentation and examples, but quite frankly, many examples are overly sophisticated and I'm having trouble understanding them. ...
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Java: is there a map function?

I need a map function. Is there something like this in Java already? 6 Answers 6 ...
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What is @ModelAttribute in Spring MVC?

... I know this is an old thread, but I thought I throw my hat in the ring and see if I can muddy the water a little bit more :) I found my initial struggle to understand @ModelAttribute was a result of Spring's decision to combine several annotations ...
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How to print Unicode character in Python?

...nal isn't capable of displaying Unicode characters. For information about reading Unicode data from a file, see this answer: Character reading from file in Python share | improve this answer ...