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Checking if form has been submitted - PHP

...e steps: Generate a unique token (you can use hash) Ex: $token = hash (string $algo , string $data [, bool $raw_output = FALSE ] ); Assign this token to a session variable. Ex: $_SESSION['form_token'] = $token; Add a hidden input to submit the token. Ex: input type="hidden" name="token" va...
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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti

...ept over if/else if that results in speed-ups (for example by preventing extra lookups) cleaner code (fewer lines/easier to read) Often, these go hand-in-hand. speed-ups In the case of trying to find an element in a long list by: try: x = my_list[index] except IndexError: x = 'NO_AB...
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Concatenating Files And Insert New Line In Between Files

... This puts the string at the end of the file; how do I get it inserted between each file? – onassar Nov 19 '18 at 16:37 ...
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Get img thumbnails from Vimeo?

...P.NET using C#. Feel free to use a different error catch image :) public string GetVimeoPreviewImage(string vimeoURL) { try { string vimeoUrl = System.Web.HttpContext.Current.Server.HtmlEncode(vimeoURL); int pos = vimeoUrl.LastIndexOf(".com"); string videoID = vimeo...
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How can I find the number of arguments of a Python function?

...signature(someMethod) Now, you can either view its parameters quickly by string it: str(sig) # returns: '(self, arg1, kwarg1=None)' or you can also get a mapping of attribute names to parameter objects via sig.parameters. params = sig.parameters print(params['kwarg1']) # prints: kwarg1=20 ...
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Python - 'ascii' codec can't decode byte

... "你好".encode('utf-8') encode converts a unicode object to a string object. But here you have invoked it on a string object (because you don't have the u). So python has to convert the string to a unicode object first. So it does the equivalent of "你好".decode().encode('utf-8') B...
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Skip callbacks on Factory Girl and Rspec

... create users without the callback by default because the methods used run extra stuff I don't normally want in my test examples. ----------UPDATE------------ I stopped using skip_callback because there were some inconsistency issues in the test suite. Alternative Solution 1 (use of stub and unstu...
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How do I tell git-svn about a remote branch created after I fetched the repo?

... This will fetch ALL the remote branches that have not been fetched yet. Extra tip: if you checked out only the trunk at first, and later you want to track ALL branches, then edit .git/config to look like this and re-run git svn fetch: [svn-remote "svn"] url = https://svn/path_to_repo_roo...
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Scala: write string to file in one statement

... @Kakaji, could you please elaborate? I've just tested it with strings with newlines, and it works perfectly. It just cannot filter anything - Files.write() writes the byte array as a blob, without analyzing its contents. After all, in some binary data 0x0d byte may have important meanin...
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Proper way to use AJAX Post in jquery to pass model from strongly typed MVC3 view

... You can skip the var declaration and the stringify. Otherwise, that will work just fine. $.ajax({ url: '/home/check', type: 'POST', data: { Address1: "423 Judy Road", Address2: "1001", City: "New York", State: "NY", ...