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isset() and empty() - what to use

...y array) var $var; (a variable declared, but without a value in a class) From http://php.net/manual/en/function.empty.php As mentioned in the comments the lack of warning is also important with empty() PHP Manual says empty() is the opposite of (boolean) var, except that no warning is ge...
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Flexbox: center horizontally and vertically

... When flex items are stacked horizontally: Adjust the flex-direction rule from the code above. #container { display: flex; flex-direction: row; /* make main axis horizontal (default setting) */ justify-content: center; /* center items horizontally, in this case */ align-items: ...
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What is `git diff --patience` for?

How does the patience algorithm differ from the default git diff algorithm, and when would I want to use it? 3 Answers ...
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How do I activate C++ 11 in CMake?

...al property CMAKE_CXX_KNOWN_FEATURES lists the C++ features you can choose from. Instead of using target_compile_features() you can also specify the C++ standard explicitly by setting the CMake properties CXX_STANDARD and CXX_STANDARD_REQUIRED for your CMake target. See also my more detailed an...
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What does an underscore in front of an import statement mean?

I saw this example from sqlite3 on GitHub : 4 Answers 4 ...
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SVG Positioning

...t;rect x="0" y="0" width="60" height="10"/> </g> Links: Example from the SVG 1.1 spec share | improve this answer | follow | ...
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break out of if and foreach

... so then the break is breaking from the foreach and not the if. i think my confusion was from this statement if ($abort_if_block) break; i had originally set break 2 and it failed. thanks – au_stan Feb 9 '12 at 17:25 ...
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What is a reasonable code coverage % for unit tests (and why)? [closed]

...age with three different answers. Why?” The great master stood up from his chair: “Come get some fresh tea with me and let’s talk about it.” After they filled their cups with smoking hot green tea, the great master began to answer: “The first programmer is new a...
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How to change a DIV padding without affecting the width/height ?

...g to the "outer"-width of the div, it means the padding will be subtracted from the width. share | improve this answer | follow | ...
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Get MD5 hash of big files in Python

... Below I've incorporated suggestion from comments. Thank you al! python < 3.7 import hashlib def checksum(filename, hash_factory=hashlib.md5, chunk_num_blocks=128): h = hash_factory() with open(filename,'rb') as f: for chunk in iter(lambd...