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How to search file text for a pattern and replace it with a given value
...opy this code into your programs.
Here's a quick short way to do it.
file_names = ['foo.txt', 'bar.txt']
file_names.each do |file_name|
text = File.read(file_name)
new_contents = text.gsub(/search_regexp/, "replacement string")
# To merely print the contents of the file, use:
puts new_co...
Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
...nt expression:
int i = 1024 * 1024 * 1024 * 1024;
becomes:
0: iconst_0
1: istore_1
Notice that the result (0) is simply loaded and stored, and no multiplication takes place.
From JLS §3.10.1 (thanks to @ChrisK for bringing it up in the comments):
It is a compile-time ...
Which is best way to define constants in android, either static class, interface or xml resource?
...ER = "http://192.168.100.2/bs.dev/nrum";
public static final String API_END = SERVER + "/dataProvider";
public static final String NEWS_API = API_END + "/newsApi";
public static final String BANNER_API = API_END + "/bannerApi/lists";
public static final String NOTICE_API = API_END + ...
Differences between Agda and Idris
...gt; a -> b -> Type where
refl : x = x
while in Agda, it is
data _≡_ {l} {A : Set l} (x : A) : A → Set a where
refl : x ≡ x
The l in the Agda defintion can be ignored, as it has to do with the universe polymorphism that Edwin mentions in his answer.
The important difference is...
Google Authenticator implementation in Python
...m/tadeck/onetimepass).
import hmac, base64, struct, hashlib, time
def get_hotp_token(secret, intervals_no):
key = base64.b32decode(secret, True)
msg = struct.pack(">Q", intervals_no)
h = hmac.new(key, msg, hashlib.sha1).digest()
o = ord(h[19]) & 15
h = (struct.unpack("&g...
How to avoid Dependency Injection constructor madness?
...pendency = concreteDependency;
}
}
IConcreteDependency _concreteDependency;
public ApplicationEfRepository(
Dependency dependency)
: base(dependency)
{
_concreteDependency = dependency.ConcreteDependency;
}
}
Why
Adding new d...
How to determine the encoding of text?
... magic
blob = open('unknown-file', 'rb').read()
m = magic.open(magic.MAGIC_MIME_ENCODING)
m.load()
encoding = m.buffer(blob) # "utf-8" "us-ascii" etc
There is an identically named, but incompatible, python-magic pip package on pypi that also uses libmagic. It can also get the encoding, by doing:...
How do I declare a 2d array in C++ using new?
...nah, it's not clever at all: it's obvious.
class Matrix
{
...
size_t index( int x, int y ) const { return x + m_width * y; }
};
Given this index() function (which I'm imagining is a member of a class because it needs to know the m_width of your matrix), you can access cells within your ma...
How to determine if a list of polygon points are in clockwise order?
...formula above? It ends with "xn*y1 - x1*yn"; when I believe it should be "x_n y_{n+1} - y_n x_{n-1}" (in LaTeX, at least). On the other hand, it's been ten years since I took any linear algebra classes.
– Michael Eric Oberlin
May 25 '15 at 20:25
...
Android Center text on canvas
... at the center position: int xPos = (Width - textPaint.TextSize * Math.Abs(_text.Length / 2)) / 2; Not sure if there's a better way to accomplish this.
– paj7777
Apr 8 '13 at 9:06
...