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Strange, unexpected behavior (disappearing/changing values) when using Hash default value, e.g. Hash
...look more in-depth at why Hash.new([]) doesn’t work:
h = Hash.new([])
h[0] << 'a' #=> ["a"]
h[1] << 'b' #=> ["a", "b"]
h[1] #=> ["a", "b"]
h[0].object_id == h[1].object_id #=> true
h #=> {}
We can see that our default object is being reused and mutated (t...
How to tell if a tag failed to load
...d I'd like to be able to tell whether the loading failed in some way -- a 404, a script error in the loaded script, whatever.
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How to compare times in Python?
...datetime.datetime.now()
>>> today8am = now.replace(hour=8, minute=0, second=0, microsecond=0)
>>> now < today8am
True
>>> now == today8am
False
>>> now > today8am
False
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How to do this using jQuery - document.getElementById(“selectlist”).value
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150
$('#selectlist').val();
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Measuring text width to be drawn on Canvas ( Android )
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answered Jul 15 '10 at 16:02
Marc BernsteinMarc Bernstein
10.9k55 gold badges3030 silver badges3131 bronze badges
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swift case falling through
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370
Yes. You can do so as follows:
var testVal = "hello"
var result = 0
switch testVal {
case "one...
Converting file size in bytes to human-readable string
...ng, floppy disks use a mixture of the two systems - their 1MB is actually 1024000 bytes.
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Use images instead of radio buttons
...r +
/* HIDE RADIO */
[type=radio] {
position: absolute;
opacity: 0;
width: 0;
height: 0;
}
/* IMAGE STYLES */
[type=radio] + img {
cursor: pointer;
}
/* CHECKED STYLES */
[type=radio]:checked + img {
outline: 2px solid #f00;
}
<label>
<input type="radio" name="test" v...
Python: Select subset from list based on index set
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answered Jul 5 '10 at 11:32
kennytmkennytm
451k9292 gold badges980980 silver badges958958 bronze badges
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CSS - Overflow: Scroll; - Always show vertical scroll bar?
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401
Just ran into this problem myself. OSx Lion hides scrollbars while not in use to make it seem m...