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Difference between map and collect in Ruby?
...Actually they are documented in the same place under ruby-doc.org:
http://www.ruby-doc.org/core/classes/Array.html#M000249
ary.collect {|item| block } → new_ary
ary.map {|item| block } → new_ary
ary.collect → an_enumerator
ary.map → an_enumerator
Invokes block once for ...
Dictionaries and default values
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For multiple different defaults try this:
connectionDetails = { "host": "www.example.com" }
defaults = { "host": "127.0.0.1", "port": 8080 }
completeDetails = {}
completeDetails.update(defaults)
completeDetails.update(connectionDetails)
completeDetails["host"] # ==> "www.example.com"
complete...
jQuery/JavaScript to replace broken images
...tibility table lists the browsers that support the error facility:
http://www.quirksmode.org/dom/events/error.html
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make an html svg object also a clickable link
...your SVG (right before the closing </svg> tag):
<a xmlns="http://www.w3.org/2000/svg" id="anchor" xlink:href="/" xmlns:xlink="http://www.w3.org/1999/xlink" target="_top">
<rect x="0" y="0" width="100%" height="100%" fill-opacity="0"/>
</a>
Then just amend the link to s...
CSS: Change image src on img:hover
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.img-wrapper {
display: inline-block;
background-image: url(https://www.w3schools.com/w3images/fjords.jpg);
}
.img-wrapper > img {
vertical-align: top;
}
.img-wrapper > img:hover {
opacity: 0;
}
<div class="img-wrapper">
<img src="https://www.w3schools.com/w3...
Build a simple HTTP server in C [closed]
...ive.google.com/file/d/0B3msld7qnNOhN1NXaFIwSFU2Mjg/view?usp=sharing
http://www.ibm.com/developerworks/systems/library/es-nweb/
The article includes pseudocode, explanations, and comments.
EDIT: IBM's link has died. I have saved a PDF of the webpage to Google Drive. Here is the code download:
http...
Add Text on Image using PIL
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First, you have to download a font type...for example: https://www.wfonts.com/font/microsoft-sans-serif.
After that, use this code to draw the text:
from PIL import Image
from PIL import ImageFont
from PIL import ImageDraw
img = Image.open("filename.jpg")
draw = ImageDraw.Draw(img)
fo...
Fastest exit strategy for a Panic Button in Crisis/Abuse Websites? [closed]
...should be pretty fast up to this point
window.location.replace("http://www.google.com"); //load the google page or my alternative.
}
I put an example on my AWS instance at 54.186.79.95 Go to that page, click the button, visit another page, then hit back, you're now on 54.186.79.95/decoywebsite ...
Custom attributes - Yea or nay?
...er attributes with hacks, so your HTML can stay semantic.
Source: http://www.w3.org/TR/html5/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes
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Jump to function definition in vim
...ol under cursor.
Here is the most downloaded plugin for navigation
http://www.vim.org/scripts/script.php?script_id=273
Here is one I've written to select context while jump to tag
http://www.vim.org/scripts/script.php?script_id=2507
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