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Bash script error [: !=: unary operator expected
...am trying to error check if the first and only argument is equal to -v but it is an optional argument. I use an if statement but I keep getting the unary operator expected error.
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How to display request headers with command line curl
...esponse header by using -D option, but I want to see what request header it is sending. How can I do that?
9 Answers
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How to undo 'git reset'?
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Short answer:
git reset 'HEAD@{1}'
Long answer:
Git keeps a log of all ref updates (e.g., checkout, reset, commit, merge). You can view it by typing:
git reflog
Somewhere in this list is the commit that you lost. Let's say you just ty...
What is the best way to create constants in Objective-C
I am creating a Reddit client for learning purposes. I need to have a file with constants in it. I was thinking about importing the file in the Reddit-Prefix.pch file to make the constants available to all the files. Is it a good way of doing things? Also, I've done my research and found several...
Can you detect “dragging” in jQuery?
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On mousedown, start set the state, if the mousemove event is fired record it, finally on mouseup, check if the mouse moved. If it moved, we've been dragging. If we've not moved, it's a click.
var isDragging = false;
$("a")
.mousedown(function() {
isDragging = false;
})
.mousemove(function() {
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How can I recover a removed file in Mercurial (if at all)?
...ile>
The deleted file will now be in your working copy, ready to be committed back into head.
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Insert new item in array on any position in PHP
How can I insert a new item into an array on any position, for example in the middle of array?
18 Answers
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How to access the last value in a vector?
... or two levels. Is there a quick and dirty way to access the last value, without using the length() function? Something ala PERL's $# special var?
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Executing periodic actions in Python [duplicate]
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At the end of foo(), create a Timer which calls foo() itself after 10 seconds.
Because, Timer create a new thread to call foo().
You can do other stuff without being blocked.
import time, threading
def foo():
print(time.ctime())
threading.Timer(10, foo).start()
foo()
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Can I find events bound on an element with jQuery?
...will be an object that contains both of the events we set (pictured below with the mouseout property expanded):
Then in Chrome, you may right click the handler function and click "view function definition" to show you the exact spot where it is defined in your code.
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