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Do I need to disable NSLog before release Application?
...e answers sugest a solution but not explain the problem. I did a search in google, and found the reason. Here is my answer:
Yes, if you comment out NSLog in your release version, the performance will become better. Because NSLog is pretty slow. Why? NSLog will do two things 1) write log messages to...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...read web server is it that single process cannot serve second client until HTTP request for first is complete.
– d1val
Oct 9 '12 at 5:26
5
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Maximum length of the textual representation of an IPv6 address?
...
Watch out for certain headers such as HTTP_X_FORWARDED_FOR that appear to contain a single IP address. They may actually contain multiple addresses (a chain of proxies I assume).
They will appear to be comma delimited - and can be a lot longer than 45 character...
How to check if command line tools is installed
... the Terminal, with a nice gui and everything.
$ xcode-select --install
http://macops.ca/installing-command-line-tools-automatically-on-mavericks/
When they were found, this is what the pkgutil command returned:
$ pkgutil --pkg-info=com.apple.pkg.CLTools_Executables
package-id: com.apple.pkg.CL...
How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
...
http://jeremy.zawodny.com/blog/archives/010717.html :
#!/bin/bash
FAIL=0
echo "starting"
./sleeper 2 0 &
./sleeper 2 1 &
./sleeper 3 0 &
./sleeper 2 0 &
for job in `jobs -p`
do
echo $job
wait $job || ...
What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...xcode command line tools installed (which you can download separately from https://developer.apple.com/), and for some specific packages you will need the entire xcode IDE installed.
xcode can be installed from the mac app store, its a free download but it takes a while since its around 5GB (if I r...
Getting a map() to return a list in Python 3.x
...
It's called a list comprehension. You can find plenty of information on Google, but here's the link to the Python (2.6) documentation on list comprehensions. You might be more interested in the Python 3 documenation, though.
...
Converting HTML files to PDF [closed]
... to build something today, I wouldn't go that route anymore.
But would use http://pdfkit.org/ instead.
Probably stripping it of all its nodejs dependencies, to run in the browser.
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Check if user is using IE
...cko) Chrome/64.0.3282.140 Safari/537.36 Edge/18.17730
Test at CodePen:
http://codepen.io/gapcode/pen/vEJNZN
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Prevent multiple instances of a given app in .NET?
...GetProcessByName has many caveats. Here is a good article on the subject:
http://odetocode.com/Blogs/scott/archive/2004/08/20/401.aspx
[STAThread]
static void Main()
{
using(Mutex mutex = new Mutex(false, "Global\\" + appGuid))
{
if(!mutex.WaitOne(0, false))
{
MessageBo...