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Batch files: How to read a file?
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You can use the for command:
FOR /F "eol=; tokens=2,3* delims=, " %i in (myfile.txt) do @echo %i %j %k
Type
for /?
at the command prompt. Also, you can parse ini files!
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Wrap a delegate in an IEqualityComparer
...inverse is true. In short, @Dan Tao is completely correct in what he says, and this answer is simply the application of this fact to a previously incomplete answer
– Ruben Bartelink
Dec 20 '10 at 5:10
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JavaScript - Replace all commas in a string [duplicate]
I have a string with multiple commas, and the string replace method will only change the first one:
3 Answers
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How can I get a resource content from a static context?
...f Application, for instance public class App extends Application {
Set the android:name attribute of your <application> tag in the AndroidManifest.xml to point to your new class, e.g. android:name=".App"
In the onCreate() method of your app instance, save your context (e.g. this) to a static f...
How to jump to a particular line in a huge text file?
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MiniQuark, I tried it, it actually works, and really quickly. I'll need to see what happens if I work on a dozen of files at the same time this way, find out at what point my system dies.
– user63503
Mar 6 '09 at 22:46
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Capture HTML Canvas as gif/jpg/png/pdf?
...rovides Canvas.toDataURL(mimetype) which is implemented in Opera, Firefox, and Safari 4 beta. There are a number of security restrictions, however (mostly to do with drawing content from another origin onto the canvas).
So you don't need an additional library.
e.g.
<canvas id=canvas width=200...
Prepend a level to a pandas MultiIndex
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A nice way to do this in one line using pandas.concat():
import pandas as pd
pd.concat([df], keys=['Foo'], names=['Firstlevel'])
An even shorter way:
pd.concat({'Foo': df}, names=['Firstlevel'])
This can be generalized to many data frames, see the docs.
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Last iteration of enhanced for loop in java
...e don't use "" + i, by the way - you don't really want concatenation here, and StringBuilder has a perfectly good append(int) overload.)
int[] array = {1, 2, 3...};
StringBuilder builder = new StringBuilder();
for (int i : array) {
if (builder.length() != 0) {
builder.append(",");
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Content Security Policy “data” not working for base64 Images in Chrome 28
...et a CSP header with the meta http-equiv header. I included a base64 image and I'm trying to make Chrome load the image.
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How do I get user IP address in django?
...tem (e.g., in the case of Heroku: Get client's real IP address on Heroku)
And then just pass the request as argument to it;
get_client_ip(request)
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