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JavaScript checking for null vs. undefined and difference between == and ===
...gain, note that the last one is vague; it will also be true if a is null.
Now, despite the above, the usual way to check for those is to use the fact that they're falsey:
if (!a) {
// `a` is falsey, which includes `undefined` and `null`
// (and `""`, and `0`, and `NaN`, and [of course] `f...
How to convert a normal Git repository to a bare one?
...f repo with the contents of repo/.git, then tell the repository that it is now a bare repository.
To do this, execute the following commands:
cd repo
mv .git ../repo.git # renaming just for clarity
cd ..
rm -fr repo
cd repo.git
git config --bool core.bare true
Note that this is different from do...
The first day of the current month in php using date_modify as DateTime object
...e for, its not first day at 0:00 o'clock, its first day and as the time is now. This fixes it strtotime('first day of this month 00:00:00', time()).
– Kalle H. Väravas
Sep 1 '14 at 6:36
...
javac not working in windows command prompt
... of checking, execute:
echo %path%
from your command prompt and let us know what it is.
Otherwise, make sure there is a javac in that directory by trying:
"c:\program files\java\jdk1.6.0_16\bin\javac.exe"
from the command prompt. You can also tell which executable (if any) is being used with ...
Why is a boolean 1 byte and not 1 bit of size?
...
Damn, now that is awkward Sir
– Asm
Jan 7 '11 at 15:05
31
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How do you create a daemon in Python?
... reference implementation of PEP 3143 (Standard daemon process library) is now available as python-daemon.
Historical answer
Sander Marechal's code sample is superior to the original, which was originally posted in 2004. I once contributed a daemonizer for Pyro, but would probably use Sander's co...
TFS: How can you Undo Checkout of Unmodified files in a batch file
... The majority of these files are not modified, but the generator does not know this ahead of time.
10 Answers
...
HTTP Error 503. The service is unavailable. App pool stops on accessing website
There are number of posts on this and I have tried many a things by now. But to no avail. Myself a Winforms Developer basically, started working on this Web stuff few days back as my company is taking Web initiatives.
...
How to read/process command line arguments?
...
at this point (12/2011), argparse is now considered a better option than optparse, correct?
– oob
Dec 20 '11 at 21:48
55
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How does SSL really work?
...ings they are allowed to sign (other certificates), and their public key.
Now if I have a copy of that Verisign certificate, I can use that to validate the signature on the server certificate for the website I want to visit. Easy, right?!
Well, not so fast. I had to get the Verisign certificate fr...