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Why do access tokens expire?

I am just getting started working with Google API and OAuth2. When the client authorizes my app I am given a "refresh token" and a short lived "access token". Now every time the access token expires, I can POST my refresh token to Google and they will give me a new access token. ...
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String output: format or concat in C#?

... what I'm trying to measure. 2. I'm starting the Stopwatch before the loop and stopping it right after, this way I'm not losing precision if the function takes for example 26.4 ticks to execute. 3. The way you divided the result by some iterations was wrong. See what happens if you have 1000 millis...
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boundingRectWithSize for NSAttributedString returning wrong size

...ng, but the boundingRectWithSize call is not respecting the size I pass in and is returning a rect with a single line height as opposed to a large height (it is a long string). I have experimented by passing in a very large value for the height and also 0 as in the code below, but the rect returned ...
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Capitalize only first character of string and leave others alone? (Rails)

I'm trying to get Rails to capitalize the first character of a string, and leave all the others the way they are. I'm running into a problem where "i'm from New York" gets turned into "I'm from new york." ...
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How do I use itertools.groupby()?

I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this: ...
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Bootstrap modal appearing under background

I have used the code for my modal straight from the Bootstrap example, and have included only the bootstrap.js (and not bootstrap-modal.js). However, my modal is appearing underneath the grey fade (backdrop) and is non editable. ...
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SFTP Libraries for .NET [closed]

... now I'm looking at products such as SecureBlackbox, IPWorks SSH, WodSFTP, and Rebex SFTP. However, I have never used any SFTP library before so I'm not sure what I'm looking for. ...
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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]

...y ways to do this. This answer starts with what is quickly becoming the standard method, but also includes older methods and various other methods from answers to similar questions scattered around this site. tmp <- data.frame(x=gl(2,3, labels=letters[24:25]), y=gl(3,1,6, labe...
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Algorithm to generate all possible permutations of a list?

... left to right, all the permutations of the remaining items are generated (and each one is added with the current elements). This can be done recursively (or iteratively if you like pain) until the last item is reached at which point there is only one possible order. So with the list [1,2,3,4] all ...
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Why are Standard iterator ranges [begin, end) instead of [begin, end]?

Why does the Standard define end() as one past the end, instead of at the actual end? 7 Answers ...