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process.env.NODE_ENV is undefined

... I don't think I missed anything but whenever I call the process.env.NODE_ENV the only value I get back is undefined. According to my research the default value should be 'development'. How is this value dynamically set and where is it set initially? ...
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How to output in CLI during execution of PHP Unit tests?

... } } This lets you dump anything to your console at any time without all the unwanted output that comes along with the --verbose CLI option. As other answers have noted, it's best to test output using the built-in methods like: $this->expectOutputString('foo'); However, sometimes it's...
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horizontal line and right way to code it in html, css

... If you really want a thematic break, by all means use the <hr> tag. If you just want a design line, you could use something like the css class .hline-bottom { padding-bottom: 10px; border-bottom: 2px solid #000; /* w...
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Check free disk space for current partition in bash

I am writing an installer in bash. The user will go to the target directory and runs the install script, so the first action should be to check that there is enough space. I know that df will report all file systems, but I was wondering if there was a way to get the free space just for the partition...
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How do you check if a variable is an array in JavaScript? [duplicate]

...structor === Array This is the fastest method on Chrome, and most likely all other browsers. All arrays are objects, so checking the constructor property is a fast process for JavaScript engines. If you are having issues with finding out if an objects property is an array, you must first check if...
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How to make a website secured with https

I have to build a small webapp for a company to maintain their business data... Only those within the company will be using it, but we are planning to host it in public domain, so that the employees can connect to app from various locations. (Till now I have built web apps that are hosted internall...
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mmap() vs. reading blocks

I'm working on a program that will be processing files that could potentially be 100GB or more in size. The files contain sets of variable length records. I've got a first implementation up and running and am now looking towards improving performance, particularly at doing I/O more efficiently since...
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How to refresh Android listview?

... Call notifyDataSetChanged() on your Adapter object once you've modified the data in that adapter. Some additional specifics on how/when to call notifyDataSetChanged() can be viewed in this Google I/O video. ...
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How to convert an Int to a String of a given length with leading zeros to align?

...this Q&A becomes the canonical compendium, scala> import java.text._ import java.text._ scala> NumberFormat.getIntegerInstance.asInstanceOf[DecimalFormat] res0: java.text.DecimalFormat = java.text.DecimalFormat@674dc scala> .applyPattern("0000000") scala> res0.format(123) res2: S...
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How to print (using cout) a number in binary form?

...ter. FYI, casting doesn't work, the bitset variable is an object of some really arcane-looking bitset3ul (?!) class. Best to let the abstractions do the work! – nirvanaswap Mar 16 '16 at 5:39 ...