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Download a file by jQuery.Ajax

...lob); const a = document.createElement('a'); a.style.display = 'none'; a.href = url; // the filename you want a.download = 'todo-1.json'; document.body.appendChild(a); a.click(); window.URL.revokeObjectURL(url); alert('your file has downloaded!'); // or y...
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Checking for an empty field with MySQL

I've wrote a query to check for users with certain criteria, one being they have an email address. 7 Answers ...
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RESTful password reset

... Hang on guys...wouldn't this essentially allow ANYONE to reset someone's password? As, if this is for someone who forget the current password, the affected user can't be authenticated with the current password. So essentially this means this API could not accept any password...
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Importing variables from another file?

How can I import variables from one file to another? 8 Answers 8 ...
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How should I use try-with-resources with JDBC?

...h doesn't declare to throw SQLException. Also, the code above has at least one path where it can fail without closing the prepared statement (if an SQLException occurs while calling setInt.) – Trejkaz May 8 '13 at 6:19 ...
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How to link to apps on the app store

I am creating a free version of my iPhone game. I want to have a button inside the free version that takes people to the paid version in the app store. If I use a standard link ...
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How to sort an array in descending order in Ruby

...value turns out to take longer than it does to reverse the entire array in one pass. It's not much of a difference, but every little speed-up helps. Please note that these results are different in Ruby 1.9 Here are results for Ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin10.8.0]:...
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If table exists drop table then create it, if it does not exist just create it

... Well... Huh. For years nobody mentioned one subtle thing. Despite DROP TABLE IF EXISTS `bla`; CREATE TABLE `bla` ( ... ); seems reasonable, it leads to a situation when old table is already gone and new one has not been yet created: some client may try to acc...
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Calling pylab.savefig without display in ipython

... The recipe I have given is a general one; if you are not working in the ipython notebook, plt.ioff() is important to stop figures from flickering on and off the screen, as in command-line ipython figures are plotted as soon as you call plt.plot() if interactive ...
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How to check if bootstrap modal is open, so i can use jquery validate

... To avoid the race condition @GregPettit mentions, one can use: ($("element").data('bs.modal') || {})._isShown // Bootstrap 4 ($("element").data('bs.modal') || {}).isShown // Bootstrap <= 3 as discussed in Twitter Bootstrap Modal - IsShown. When the modal is not...