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How to inspect the return value of a function in GDB?
..., fun () at test.c:2
2 return 42;
(gdb) finish
Run till exit from #0 fun () at test.c:2
main () at test.c:7
7 return 0;
Value returned is $1 = 42
(gdb)
The finish command can be abbreviated as fin. Do NOT use the f, which is abbreviation of frame command!
...
MongoDB with redis
Can anyone give example use cases of when you would benefit from using Redis and MongoDB in conjunction with each other?
3 ...
Java system properties and environment variables
... System.grtProperties() lists all properties, and those set from command line will be there, but there's no way to distinguish those from the other properties added by the system, if that's what you're asking.
– Bohemian♦
Jul 25 '13 at 10:13
...
Reload the path in PowerShell
...with variable expansion) with a simple command:
refreshenv
Installation from cmd (requires administrator rights):
@"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('h...
How do you run a command for each line of a file?
...d: read [-r] ... [-d delim] ... [name ...]
...
Reads a single line from the standard input... The line is split
into fields as with word splitting, and the first word is assigned
to the first NAME, the second word to the second NAME, and so on...
Only the characters found in $IFS...
Large, persistent DataFrame in pandas
...., to an SQLite database step by step:
import pandas as pd
import sqlite3
from pandas.io import sql
import subprocess
# In and output file paths
in_csv = '../data/my_large.csv'
out_sqlite = '../data/my.sqlite'
table_name = 'my_table' # name for the SQLite database table
chunksize = 100000 # numbe...
Why not be dependently typed?
...e yet in Haskell, although DataKinds gets very close).
Edit: Apparently, from this point forward, I was wrong (see @pigworker's comment). I'll preserve the rest of this as a record of the myths I've been fed. :P
The issue with moving to full dependent typing, from what I've heard, is that it ...
How to hash a password
...
UPDATE: THIS ANSWER IS SERIOUSLY OUTDATED. Please use the recommendations from the https://stackoverflow.com/a/10402129/251311 instead.
You can either use
var md5 = new MD5CryptoServiceProvider();
var md5data = md5.ComputeHash(data);
or
var sha1 = new SHA1CryptoServiceProvider();
var sha1data ...
Using fonts with Rails asset pipeline
...nd all non-JS/CSS files (this will include all image assets automatically) from app/assets folders" (see here)
– Eric L.
Nov 6 '13 at 13:26
...
CSRF Token necessary when using Stateless(= Sessionless) Authentication?
...al link, and no javascript content-replace)
You can still access the token from sessionStorage
To logout, you can either manually delete the token from sessionStorage or wait for the user to close the browser window, which will clear all stored data.
(for both have a look here: http://www.w3schoo...