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What is this operator in MySQL?

...) Based on this, your particular query (fragment) can be converted to the more portable: WHERE p.name IS NULL Support The SQL:2003 standard introduced a predicate for this, which works exactly like MySQL's <=> operator, in the following form: IS [NOT] DISTINCT FROM The following is univers...
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Is there a way to suppress warnings in Xcode?

...v.com/index.pl?XCodePragmas UPDATE: I came accross with a new solution, a more robust one Open the Project > Edit Active Target> Build tab. Under User-Defined: find (or create if you don't find one )the key : GCC_WARN_UNUSED_VARIABLE set it to NO. EDIT-2 Example: BOOL ok = YES; NSAss...
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Adding :default => true to boolean in existing Rails column

...efault_value_to_show_attribute Then in the migration created: # That's the more generic way to change a column def up change_column :profiles, :show_attribute, :boolean, default: true end def down change_column :profiles, :show_attribute, :boolean, default: nil end OR a more specific option: d...
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Why is “Set as Startup” option stored in the suo file and not the sln file?

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Jasmine.js comparing arrays

...1, 2, 3]); }); But if the array that is returned from some function has more than 1 elements and all are zero then verify by using expect(mockArray[0]).toBe(0); share | improve this answer ...
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How do I write good/correct package __init__.py files

... My own __init__.py files are empty more often than not. In particular, I never have a from blah import * as part of __init__.py -- if "importing the package" means getting all sort of classes, functions etc defined directly as part of the package, then I woul...
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How can I let a table's body scroll but keep its head fixed in place?

...o work in firefox, and it is the obvious and non-cludgy code. However, in more recent versions of firefox, it's broken. – Rasmus Kaj Nov 27 '11 at 23:37 6 ...
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Let JSON object accept bytes or let urlopen output strings

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Accurate way to measure execution times of php scripts

... of your code: $time = microtime(true) - $_SERVER["REQUEST_TIME_FLOAT"]; (More info in an answer below.) – ashleedawg Apr 2 '19 at 20:56  |  ...
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How can I combine flexbox and vertical scroll in a full-height app?

... I opened the fiddle link and doesn't seem to be working anymore on Chrome (works in Firefox). The scroll bar disappeared. Does anyone have an idea how to get this working again? – bets Apr 3 '17 at 20:47 ...