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Say I have a collection of strings "123AB", "456CDEF", "789G", "012-HI". How do I find all the strings that are number(1 or more) followed by alpha(1 or more) with no special characters, where the alpha characters are not AB ?
To clarify, the regex applied...
Started by thorncp on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
^\d+(?:a(?:b[....
But I'll leave the answer visible as an example of what won't work .
You want a lookahead assertion: ^[0-9]+(?!AB$)[A-Z]+$ Without look-ahead:
^[0-9]+([B-Z]|A[AC-Z])[A-Z]*$
Edit:
Withdrawn, because this won't match something like 123A .
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Regex to Find Second Char is Alpha up to 5 Alpha Followed by 1 numeral.
Thanks
Answer Snippets (Read the full thread at stackoverflow):
Character is alpha up to 5 following alpha (i.e., total 1 - 6 alpha) final numeric Yes?
Assuming.
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How do I change the global alpha value of a BufferedImage in Java? (I.E. make every pixel in the image that has a alpha value of 100 have a alpha value of 80)
Started by William on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
This and that works perfect:
public void setAlpha(byte alpha) { alpha %= 0xff; for (int cx=0;cx<obj, cy); int mc = (alpha << 24) | 0x00 ; int newcolor = color & mc; obj_img.setRGB(cx, cy, newcolor); } }
}
where obj_img is....
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Ask your Facebook Friends
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A quadratic polynomial has two zeroes namely alpha and beta. find p(x) if alpha+beta=19 and alpha--beta=5?
Started by Amrita on
, 2 posts
by 2 people.
Answer Snippets (Read the full thread at yahoo):
alpha + Beta = 19
alpha - Beta = 5
Adding equations 2 * alpha = 24
: alpha=12
: Beta = alpha - 5 ( from second equation)
= 7
so P(x)= (x-alpha)*(x - beta)
= (x-12)(x-7)
= x^2 -19x + 84 Ans.....
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How to detect if a PNG image has transparent alpha channel or not using PIL?
img = Image.open('example.png', 'r') has_alpha = img.mode == 'RGBA'
With above code we know whether a PNG image has alpha channel not not but how to get the alpha value?
I didn...
Started by jack on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
# python 2.6+ import operator, itertools def get_alpha_channel(image): "Return....
The img.info is about the image as a whole -- the alpha-value in an RGBA image is per-pixel, so -- the tuple's last value will then be A, the alpha value.
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I want to draw transparent windows (with alpha channel) on Linux (GTK) and OSX. Is there an API to do that ? Note that I don't want to set a global transparency, the alpha level should be set per pixel.
I'm looking for the same kind of API than the UpdateLayeredWindow...
Started by math on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
I found this code-transparent blue window....
Although the example uses a custom window, you can use is that the standard drop shadow doesn’t interact very well with alpha-blended edges.
Overall alpha, arbitrary alpha can be used.
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I want to know how the glBlendFunc works. For example, i have 2 gl textures, where the alpha is on tex1, i want to have alpha in my final image. Where the color is on tex1, i want the color from tex2 to be.
Started by DavidG on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
The solution was to insist that the artist makes the "action the color means it adds to the texture... .
As Lee pointed out, texture blending is to allow alpha to show up on the framebuffer.
Color ( incl alpha ), to a part of a defined texture.
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I'm trying to add alpha effect for my image. the image is in rounded corner rectangular shape. i know there is attributes to change the alpha in CSS3, but i'm trying to be compliant with the w3c standard, which is still CSS2.
Sorry i didn't state my question...
Started by fei on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Img.transparent{ filter: alpha(opacity=100: alpha(opacity=50); /* internet explorer....
Of course this would require work on hover, note that this won't work in IE6 .
If the image is a PNG , you can include alpha directly in the image.
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Canon EOS 400D, Sony alpha A200, Sony alpha A230 OR Sony alpha A 290? Hi, I am new to Photography and have found these three camera's second hand for around £150, all the reviews contradict each other so its become very confusing, all are in decent condition...
Started by WhatsFloating on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at yahoo):
If you invest in the Sony system then when you upgrade bodies in a few years all that will be available is... .
Before buying a Sony, go to a camera shop and test out their new models with the SLT technology (try the a57 and a77) .
Cananon Eos 400 D is best.
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Canon EOS 400D, Sony alpha A200, Sony alpha A230 OR Sony alpha A 290? Hi, I am new to Photography and have found these three camera's second hand for around £150, all the reviews contradict each other so its become very confusing, all are in decent condition...
Started by WhatsFloating on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at yahoo):
If you invest in the Sony system then when you upgrade bodies in a few years all that will be available is... .
Before buying a Sony, go to a camera shop and test out their new models with the SLT technology (try the a57 and a77) .
Cananon Eos 400 D is best.
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