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Using PowerShell to write a file in UTF-8 without the BOM
...s += @{ Width = $Width }
}
# Note: By not using begin / process / end blocks, we're effectively running
# in the end block, which means that all pipeline input has already
# been collected in automatic variable $Input.
# We must use this approach, because using | Out-Str...
Android Writing Logs to text File
...
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
try
{
//BufferedWriter for performance, true to set append to file flag
BufferedWriter buf = new BufferedWriter(new FileWriter(logFile, true));
buf.app...
Load and execution sequence of a web page?
... of HTML document ends
Note that the download may be asynchronous and non-blocking due to behaviours of the browser. For example, in Firefox there is this setting which limits the number of simultaneous requests per domain.
Also depending on whether the component has already been cached or not, the...
Are Mutexes needed in javascript?
...nse, because you don't have two threads running in the context of a single block at any time.
– Ovesh
Jul 20 '11 at 10:59
10
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How to use comments in Handlebar templates?
...andlebar.js as my templating engine. Now I want to comment out some of the blocks in my handlebar templates. But then I realized that Handlebar doesn't ignore the expressions inside the Handlebar comment block. Any workaround for this?
...
Rails 3: “field-with-errors” wrapper changes the page appearance. How to avoid this?
...visual difference you are seeing is happening because the div element is a block element. Add this style to your CSS file to make it behave like an inline element:
.field_with_errors { display: inline; }
share
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How to map and remove nil values in Ruby
...er_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a good read on the subject, with some performance benchmarks against some of the earlier approaches to this...
Using margin:auto to vertically-align a div
...swer.
You can't use:
vertical-align:middle because it's not applicable to block-level elements
margin-top:auto and margin-bottom:auto because their used values would compute as zero
margin-top:-50% because percentage-based margin values are calculated relative to the width of containing block
In f...
What is the Ruby (spaceship) operator?
... operator most likely originated, it was used mainly to simplify the "sort BLOCK LIST" syntax. The BLOCK is a subroutine that can return any positive number, negative number, or 0 depending on how the list items should be sorted. Spaceship operator is convenient to use in the block.
...
How to create a directory if it doesn't exist using Node.js?
... performing this operation on app boot or initialization, then its fine to block execution as you'd do the same thing if you were to do it async. If you're making a directory as a recurring operation then its bad practice but probably won't cause any performance issue, but its a bad habbit none-the-...