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How to determine if a string is a number with C++?

...line from the file I am reading is a number or not (I will know if it is a parameter this way). I wrote the below function which I believe was working smoothly (or I accidentally edited to stop it or I'm schizophrenic or Windows is schizophrenic): ...
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Newline in JLabel

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How can I get a file's size in C++? [duplicate]

Let's create a complementary question to this one . What is the most common way to get the file size in C++? Before answering, make sure it is portable (may be executed on Unix, Mac and Windows), reliable, easy to understand and without library dependencies (no boost or qt, but for instance glib is...
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Uploading images using Node.js, Express, and Mongoose

Please consider newer answers that have more up-to-date information as things have changed over the years! 12 Answers ...
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Is it necessary to write HEAD, BODY and HTML tags?

...es <html>, <head>, <body>, <p> and <li>. https://google.github.io/styleguide/htmlcssguide.html#Optional_Tags For file size optimization and scannability purposes, consider omitting optional tags. The HTML5 specification defines what tags can be omitted. ...
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What is the most elegant way to remove a path from the $PATH variable in Bash?

Or more generally, how do I remove an item from a colon-separated list in a Bash environment variable? 33 Answers ...
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how to prevent “directory already exists error” in a makefile when using mkdir

... On UNIX Just use this: mkdir -p $(OBJDIR) The -p option to mkdir prevents the error message if the directory exists. share | improve this answer ...
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Grep characters before and after match?

...efore and 4 characters after $> echo "some123_string_and_another" | grep -o -P '.{0,3}string.{0,4}' 23_string_and share | improve this answer | follow | ...
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How do I create a directory from within Emacs?

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How can I split up a Git commit buried in history?

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