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What is the bit size of long on 64-bit Windows?
Not to long ago, someone told me that long are not 64 bits on 64 bit machines and I should always use int . This did not make sense to me. I have seen docs (such as the one on Apple's official site) say that long are indeed 64 bits when compiling for a 64-bit CPU. I looked up what it was on 64-...
How do I iterate over an NSArray?
I'm looking for the standard idiom to iterate over an NSArray. My code needs to be suitable for OS X 10.4+.
8 Answers
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Is there an MD5 Fixed Point where md5(x) == x?
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Since an MD5 sum is 128 bits long, any fixed point would necessarily also have to be 128 bits long. Assuming that the MD5 sum of any string is uniformly distributed over all possible sums, then the probability that any given 128-bit string is a fixe...
Is there any particular difference between intval and casting to int - `(int) X`?
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@moose that page states $i++ is incorrect in red. But it should be slower!!
– Shiplu Mokaddim
Feb 26 '12 at 1:09
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Arduino Sketch upload issue - avrdude: stk500_recv(): programmer is not responding
I have an Arduino Duemilanove with an ATmega328 . I am working on Ubuntu 12.04 (Precise Pangolin), and the Arduino IDE's version is 1.0. Recently, I tried to upload a few of the sample sketches onto it, such as the Blink one. However, none of my attempts are working and they result in the same e...
How can I generate a self-signed certificate with SubjectAltName using OpenSSL? [closed]
I am trying to generate a self-signed certificate with OpenSSL with SubjectAltName in it.While I am generating the csr for the certificate, my guess is I have to use v3 extensions of OpenSSL x509.
I am using :
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How to subtract X days from a date using Java calendar?
... to subtract 5 days from the current time of the calendar, you can achieve it by calling:
Calendar calendar = Calendar.getInstance(); // this would default to now
calendar.add(Calendar.DAY_OF_MONTH, -5).
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Why do python lists have pop() but not push()
...ast element (that indexed at -1) and list.append semantic is consistent with that use?
10 Answers
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Use LINQ to get items in one List, that are not in another List
...ut could introduce performance issues, and especially if the data set is quite large. If this doesn't satisfy your performance requirements, you may need to evaluate other options. Since the stated requirement is for a solution in LINQ, however, those options aren't explored here. As always, evaluat...
Versioning SQL Server database
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Martin Fowler wrote my favorite article on the subject, http://martinfowler.com/articles/evodb.html. I choose not to put schema dumps in under version control as alumb and others suggest because I want an easy way to upgrade my production database.
Fo...