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String concatenation vs. string substitution in Python
...-squared. Some languages will optimize concatenation to the most recently allocated string, but it's risky to count on the compiler to optimize your quadratic algorithm down to linear. Best to use the primitive (join?) that takes an entire list of strings, does a single allocation, and concatenate...
How to clear Facebook Sharer cache?
...ttp and https as of the writing of this answer). You do not need an access token.
A post request to graph.facebook.com may look as follows:
POST / HTTP/1.1
Content-Type: application/x-www-form-urlencoded
Host: graph.facebook.com
Content-Length: 63
Accept-Encoding: gzip
User-Agent: Mojolicious (Per...
Nodemailer with Gmail and NodeJS
...
You should use an XOAuth2 token to connect to Gmail. No worries, Nodemailer already knows about that:
var smtpTransport = nodemailer.createTransport('SMTP', {
service: 'Gmail',
auth: {
XOAuth2: {
user: smtpConfig.user,
c...
Python Pandas Error tokenizing data
...[0].strip()
if errortype == 'Error tokenizing data':
cerror = e.message.split(':')[1].strip().replace(',','')
nums = [n for n in cerror.split(' ') if str.isdigit(n)]
expected.append(int(nums[...
Convert PDF to clean SVG? [closed]
...xpansion,
:: but not with delayed expansion.
pushd "%_work_dir%"
FOR /f "tokens=*" %%A IN ('DIR /A:-D /O:N /B %_work_file_str%') DO (
CALL :subroutine "%%A"
)
popd
:: ===== CONVERT PDF TO SVG WITH INKSCAPE =====
:subroutine
echo.
IF NOT [%1]==[] (
echo %count%:%1
set /A count+=1
...
Hidden features of Windows batch files
...nd! While I hate writing batch files, I'm thankful for it.
FOR /F "eol=; tokens=2,3* delims=, " %i in (myfile.txt) do @echo %i %j %k
would parse each line in myfile.txt, ignoring lines that begin with a semicolon, passing the 2nd and 3rd token from each line to the for body, with tokens delimite...
Android: Storing username and password?
...spicuous, and less
likely to be successful. Instead use an authorization token and
refresh it.
Where possible, username and password should not be stored on the
device. Instead, perform initial authentication using the username and
password supplied by the user, and then use a short-liv...
Why are #ifndef and #define used in C++ header files?
...
#ifndef <token>
/* code */
#else
/* code to include if the token is defined */
#endif
#ifndef checks whether the given token has been #defined earlier in the file or in an included file; if not, it includes the code between it an...
Random hash in Python
... take an optional nbytes argument, default is 32 (bytes * 8 bits = 256-bit tokens). MD5 has 128-bit hashes, so provide 16 for "MD5-like" tokens.
>>> import secrets
>>> secrets.token_hex(nbytes=16)
'17adbcf543e851aa9216acc9d7206b96'
>>> secrets.token_urlsafe(16)
'X7NYIol...
What is the meaning of “… …” token? i.e. double ellipsis operator on parameter pack
...cc's current implementation of new C++11 headers, I stumbled upon "......" token. You can check, that the following code compiles fine [via ideone.com].
...