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How to extract a floating number from a string [duplicate]
... 1e100 db"
for token in user_input.split():
try:
# if this succeeds, you have your (first) float
print float(token), "is a float"
except ValueError:
print token, "is something else"
# => Would print ...
#
# Current is something else
# Level: is something else
# 1e...
How to make gradient background in android
...ine the top and bottom 'bands' into one file. Each band is an xml shape.
See this previous answer on SO for a detailed tutorial: Multi-gradient shapes.
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In Visual Studio C++, what are the memory allocation representations?
...ormation added to debug allocations. This table is more complete:
http://www.nobugs.org/developer/win32/debug_crt_heap.html#table
Address Offset After HeapAlloc() After malloc() During free() After HeapFree() Comments
0x00320FD8 -40 0x01090009 0x01090009 0x01090009 0x0109005A ...
Combine two or more columns in a dataframe into a new column with a new name
...f$s)
df
# n s b x
# 1 2 aa TRUE 2 aa
# 2 3 bb FALSE 3 bb
# 3 5 cc TRUE 5 cc
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How to replace plain URLs with links?
... is the official list of valid TLDs. No demo.
autolink-js wouldn't detect "www.google.com" without http://, so it's not quite suitable for autolinking "casual URLs" (without a scheme/protocol) found in plain text.
Ben Alman's linkify hasn't been maintained since 2009.
If you insist on a regular ex...
What characters can be used for up/down triangle (arrow without stem) for display in HTML?
...
Haha! I just needed these again and searched for "Unicode triangles." Google brought me right here. Huzzah!
– Nathan Long
Jan 15 '11 at 19:00
...
Check if a class has a member function of a given signature
... Obviously it doesn't add to the answer, but it does mean that people can see your code in action after a quick cut & paste.
– Richard Corden
Sep 18 '08 at 17:50
2
...
Resolve build errors due to circular dependency amongst classes
... A.h
class A {
B _b;
};
// file: B.h
class B {
A _a;
};
// file main.cc
#include "A.h"
#include "B.h"
int main(...) {
A a;
}
When you are compiling the .cc file (remember that the .cc and not the .h is the unit of compilation), you need to allocate space for object A. So, well, how much sp...
.war vs .ear file
...
Refer: http://www.wellho.net/mouth/754_tar-jar-war-ear-sar-files.html
tar (tape archives)
- Format used is file written in serial units of fileName, fileSize, fileData
- no compression. can be huge
Jar (java archive)
- compression techni...
Unnamed/anonymous namespaces vs. static functions
...ct inlining?
– Alex
Oct 11 '11 at 9:04
18
Those at the C++ design comitee who said static keyword...