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JavaScript closure inside loops – simple practical example

...pport let but get the above wrong (they don't create a new i each time, so all the functions above would log 3 like they would if we used var). Edge 14 finally gets it right. ES5.1 solution: forEach With the relatively widespread availability of the Array.prototype.forEach function (in 2015), it's ...
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convert_tz returns null

...ving these files to a different location such as /usr/share/zoneinfo/.bak/ allows for the command mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql to fully populate all of the expected timezone information. This may or may not be a bug in my installed version of MySQL: $ mysql -...
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What is Data Transfer Object?

...attern. Another use for DTOs can be to encapsulate parameters for method calls. This can be useful if a method takes more than 4 or 5 parameters. When using the DTO pattern, you would also make use of DTO assemblers. The assemblers are used to create DTOs from Domain Objects, and vice versa. The ...
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Apache Spark: map vs mapPartitions?

... I'm seeing the opposite -- even with very small operations, its faster to call mapPartitions and iterate than call map. I am assuming that this is just the overhead of starting the language engine that will process the map task. (I'm in R, which may have more startup...
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Haml: Control whitespace around text

...t;a href='thing'>here</a>. precede: = precede '*' do %span.small Not really Produces: *<span class='small'>Not really</span> To answer the original question: I will first = succeed ',' do = link_to 'link somewhere', 'http://example.com' - if @condition then render...
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Why do we need the “finally” clause in Python?

I am not sure why we need finally in try...except...finally statements. In my opinion, this code block 14 Answers ...
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Concept of void pointer in C programming

...ligned at 4-byte boundary to be dereferenced). For example, reading uint16_t from void*: /* may receive wrong value if ptr is not 2-byte aligned */ uint16_t value = *(uint16_t*)ptr; /* portable way of reading a little-endian value */ uint16_t value = *(uint8_t*)ptr | ((*((uint8_t*)...
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What's the difference between “squash” and “fixup” in Git/Git Extension?

...f you remove a line here THAT COMMIT WILL BE LOST. D:/code/fenixito-legacy-api/.git/rebase-merge/git-rebase-todo [unix] (11:57 23/10/2019) 1,1 start "D:/code/xxx/.git/rebase-merge/git-rebase-todo" [UNIX] 27L, 1170C So you see: s, squash = use commit, but me...
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JavaScript: filter() for Objects

...rible things will happen to your code. Things will break. You're extending all object types, including object literals. Here's a quick example you can try: // Extend Object.prototype Object.prototype.extended = "I'm everywhere!"; // See the result alert( {}.extended ); // "I'm ev...
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Align image in center and middle within div

...00%; height:100%"> <img src="http://www.garcard.com/images/garcard_symbol.png"> </div> JSFiddle share | improve this answer | follow ...