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What is the difference between 'my' and 'our' in Perl?
...rs, which was only file-scoped, and not lexically scoped as is our.
For example, the formal, qualified name for variable $x inside package main is $main::x. Declaring our $x allows you to use the bare $x variable without penalty (i.e., without a resulting error), in the scope of the declaration, wh...
How to diff one file to an arbitrary version in Git?
...n't just work for files, it also works for (sub)directories as well, for example git diff <revision>:foo/ HEAD:foo/.
– user456814
Jul 5 '14 at 18:59
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Java FileOutputStream Create File if not exists
...condition is redundant. According to JavaDoc, createNewFile() itself atomically checks the existence of the file.
– aztek
Oct 2 '12 at 10:11
8
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Hashing a file in Python
...those bigger files in chunks!
import sys
import hashlib
# BUF_SIZE is totally arbitrary, change for your app!
BUF_SIZE = 65536 # lets read stuff in 64kb chunks!
md5 = hashlib.md5()
sha1 = hashlib.sha1()
with open(sys.argv[1], 'rb') as f:
while True:
data = f.read(BUF_SIZE)
i...
How to use java.net.URLConnection to fire and handle HTTP requests?
...
First a disclaimer beforehand: the posted code snippets are all basic examples. You'll need to handle trivial IOExceptions and RuntimeExceptions like NullPointerException, ArrayIndexOutOfBoundsException and consorts yourself.
Preparing
We first need to know at least the URL and the charset. The ...
Printing all global variables/local variables?
How can I print all global variables/local variables? Is that possible in gdb?
3 Answers
...
.Net picking wrong referenced assembly version
...ion, in windows based computer, ckuck Start and search for "run" > copy& paste "%userprofile%\.nuget\packages" - this will open nuget versions folder
– E.Meir
Apr 10 '18 at 11:17
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How to auto-format code in Eclipse?
...ed Mar 27 '13 at 9:09
HasanAboShallyHasanAboShally
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Access an arbitrary element in a dictionary in Python
...guaranteed order (they're implemented as hash tables). If you want, for example, the value corresponding to the smallest key, thedict[min(thedict)] will do that. If you care about the order in which the keys were inserted, i.e., by "first" you mean "inserted earliest", then in Python 3.1 you can u...
How do I vertically align text in a div?
...owser, one can use display:table/display:table-cell to center content.
A sample is also available at JSFiddle:
div { border:1px solid green;}
<div style="display: table; height: 400px; overflow: hidden;">
<div style="display: table-cell; vertical-align: middle;">
<div&g...