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Java List.add() UnsupportedOperationException

...to other List implementations that are either immutable or only allow some selected changes. You can find out about this by reading the documentation of UnsupportedOperationException and List.add(), which documents this to be an "(optional operation)". The precise meaning of this phrase is explaine...
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How to prettyprint a JSON file?

... end up with maps whose keys are u"some-key" (python unicode), which makes selecting fields more difficult and doesn't really go in the direction of pretty-printing. You can also use jq: jq . some.json and you get colors as a bonus (and way easier extendability). Addendum: There is some confusi...
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Options, Settings, Properties, Configuration, Preferences — when and why?

... Settings: Thinking of a slider to select a value from 1 to 10 for example Options: Thinking of an on/off button Preferences: Thinking of a choice from multiple choices, like morning, afternoon or evening Configuration: Technical settings probably end users...
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Rails Migration: Remove constraint

... This should be the selected answer – nahtnam Aug 9 '19 at 17:50 add a comment  |  ...
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Binary Data in MySQL [closed]

... mysql_connect("localhost", "root", "password"); mysql_select_db("binary_data"); $data = mysql_real_escape_string(fread(fopen($form_data, "r"), filesize($form_data))); $result = mysql_query("INSERT INTO binary_data (description, bin_data, filenam...
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In a .csproj file, what is for?

...directory, even though they're not in the output group by default. If you select "Copy to Output Directory" -> "Copy Always" for a <None> file, this will cause it to be copied, and you will see the entry added to the project's .csproj file will have a <None> entry for the file. ...
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How to extract text from a PDF? [closed]

...xtwrite do? I don't understand much after reading How to Use Ghostscript | Selecting an output device – Ooker Apr 6 at 13:58 ...
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How do I solve the INSTALL_FAILED_DEXOPT error?

... Restarting the emulator from the Android SDK and AVD Manager and selecting the option Wipe User Data has solved this problem for me. You can find the option as highlighted in the below given image: share ...
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Start a git commit message with a hashmark (#)

...y that behavior is wanted. git 2.0.x/2.1 (Q3 2014) will add an automatic selection for core.commentChar: See commit 84c9dc2 When core.commentChar is "auto", the comment char starts with '#' as in default but if it's already in the prepared message, find another char in a small subset. This should...
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How to disable Crashlytics during development

... They state on the website: Enable collection for selected users by initializing Crashlytics from one of your app's activities but I guess it doesn't change much if you initialize Crashlytics in the application. Did you try it? If it works, then I can add it to my answer. f...