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Does adding a duplicate value to a HashSet/HashMap replace the previous value

...do a check on the backing HashMap to see if the key already exists before calling put on the backing map? – mystarrocks Jun 9 '14 at 21:36 ...
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Global variables in Javascript across multiple files

A bunch of my JavaScript code is in an external file called helpers.js. Inside the HTML that calls this JavaScript code I find myself in need of knowing if a certain function from helpers.js has been called. ...
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How to add an Access-Control-Allow-Origin header

...off2)$"> <IfModule mod_headers.c> Header set Access-Control-Allow-Origin "*" </IfModule> </FilesMatch> also in your remote CSS file, the font-face declaration needs the full absolute URL of the font-file (not needed in local CSS files): e.g. @font-face { font-fa...
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Retrieve specific commit from a remote Git repository

...(Q2 2015), fetching a single commit (without cloning the full repo) is actually possible. See commit 68ee628 by Fredrik Medley (moroten), 21 May 2015. (Merged by Junio C Hamano -- gitster -- in commit a9d3493, 01 Jun 2015) You now have a new config (on the server side) uploadpack.allowReachable...
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Is there an equivalent of CSS max-width that works in HTML emails?

I'm trying to create an HTML email that will display properly in all widely used email clients. I'm wrapping the whole email in a table, and I'd like it to have a width that is up to 98% of the available width, but no greater than 800 pixels. Like this: <table style="width:98%; max-width:800px...
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How to create CSV Excel file C#? [closed]

... public void ExportToFile(string path) { File.WriteAllText(path, Export()); } //export as binary data. public byte[] ExportToBytes() { return Encoding.UTF8.GetBytes(Export()); } //get the csv value for field. ...
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What is the difference between NaN and None?

... a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead nan is assigned. Surely None is more descriptive of an empty cell as it has a null value, whe...
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Character reading from file in Python

... print repr(line) It's also possible to open files in update mode, allowing both reading and writing: with codecs.open('test', encoding='utf-8', mode='w+') as f: f.write(u'\u4500 blah blah blah\n') f.seek(0) print repr(f.readline()[:1]) EDIT: I'm assuming that your intended go...
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git: patch does not apply

I have a certain patch called my_pcc_branch.patch. 10 Answers 10 ...
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git pushes with wrong user from terminal

...roblem at work. The builtin git that ships with mac or comes when you install xcode caches git credentials in keychain. The fix for me was to: start keychain access (start spotlight via cmd + space, type keychain, press enter) Under keychains on the upper left, select "login" Under category on t...