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In Python, how do I create a string of n characters in one line of code?
...nly one line of code (not counting the import statements and defining n):
from random import choice
from string import ascii_lowercase
n = 10
string_val = "".join(choice(ascii_lowercase) for i in range(n))
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How does “make” app know default target to build if no target is specified?
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To save others a few seconds, and to save them from having to read the manual, here's the short answer. Add this to the top of your make file:
.DEFAULT_GOAL := mytarget
mytarget will now be the target that is run if "make" is executed and no target is specified.
If yo...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
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See the bit twiddling hacks for many solutions. Copypasting from there is obviously simple to implement. =)
For example (on a 32-bit CPU):
uint8_t b = byte_to_reverse;
b = ((b * 0x0802LU & 0x22110LU) | (b * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16;
If by “simple to...
Show filename and line number in grep output
...ing in this example), ignoring case, and display line numbers. The output from that grep will look something like:
/path/to/result/file.name:100: Line in file where 'searchstring' is found.
Next we pipe that result to the cut command using colon : as our field delimiter and displaying fields 1 t...
Difference between C++03 throw() specifier C++11 noexcept
...when a dynamic exception specification is violated: an exception is thrown from a function whose exception specification forbids exceptions of this type.
std::unexpected() may also be called directly from the program.
In either case, std::unexpected calls the currently installed std::unexpected_ha...
What is `git diff --patience` for?
How does the patience algorithm differ from the default git diff algorithm, and when would I want to use it?
3 Answers
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How to get the number of Characters in a String?
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You can try RuneCountInString from the utf8 package.
returns the number of runes in p
that, as illustrated in this script: the length of "World" might be 6 (when written in Chinese: "世界"), but its rune count is 2:
package main
import "fmt"
import "...
PHP + curl, HTTP POST sample code?
...le
curl.cainfo=c:\php\cacert.pem
The latest cacert.pem can be downloaded from the Internet or extracted from your favorite browser. When changing any php.ini related settings remember to restart your webserver.
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How to change a DIV padding without affecting the width/height ?
...g to the "outer"-width of the div, it means the padding will be subtracted from the width.
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onIabPurchaseFinished never called.
...d the same issue and the onActivityResult was not called either.
Inspired from @Ghulam's answer I realized that the activity onActivityResult doesn't call the fragment's onActivityResult automatically so I had to do it
manually.
@Override
protected void onActivityResult(int requestCode, int r...