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MD5 algorithm in Objective-C
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This is not about files. If you want to create a MD5 from a file with these methods, then you can do NSData *fileContents = [NSData dataWithContentsOfFile:@"<yourPath>"]; NSString *myHash = [fileContents md5]; And yes, this would pull the whole file into memory. If you fi...
How can I send an inner to the bottom of its parent ?
...t out of place, this one isolates the object you want to put at the bottom from the rest. Great solution!
– Alejandro Aristizábal
Apr 7 at 21:19
add a comment
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How to list all users in a Linux group?
...m. Since my location uses only flat files and LDAP, I can just get a list from both locations, but that may or may not be true for your environment.
Edit 2: Someone in passing reminded me that getent passwd will return a list of all users on the system including ones from LDAP/NIS/etc., but getent...
Creating rounded corners using CSS [closed]
...der: 1px solid #ccc;
/* each value for each corner clockwise starting from top left */
-webkit-border-radius: 10px 3px 0 20px;
border-radius: 10px 3px 0 20px;
}
As you see in each set you have browser specific styles and on the fourth rows we declare in standard way by this we...
How do I check that multiple keys are in a dict in a single pass?
... 3 of the alternatives.
Put in your own values for D and Q
>>> from timeit import Timer
>>> setup='''from random import randint as R;d=dict((str(R(0,1000000)),R(0,1000000)) for i in range(D));q=dict((str(R(0,1000000)),R(0,1000000)) for i in range(Q));print("looking for %s items ...
Scala: write string to file in one statement
...ccepts a java.lang.Iterable as the second argument, and we can obtain that from a Scala Iterable, i.e. pretty much any collection type, using a converter: import java.nio.file.{Files, Paths}; import scala.collection.JavaConverters.asJavaIterableConverter; val output = List("1", "2", "3"); Files.writ...
What is a regular expression for a MAC Address?
... As an aside, the quote above concerning "standard format" comes from Wikipedia, not the 802.3 standards body. IEEE 802-2014 actually specifies hyphens for ordinary MAC addresses (§ 8.1 ¶ 3) and colons for the obsolescent bit-reversed notation (¶ 4). Importantly, in practice, no one o...
Java rounding up to an int using Math.ceil
... don't want floor(a/b), but ceil(a/b), and using the definitions and plots from Wikipedia:
With these plots of the floor and ceil function you can see the relationship.
You can see that floor(x) <= ceil(x). We need floor(x + s) = ceil(x). So we need to find s. If we take 1/2 <= s < 1 it ...
When is “Try” supposed to be used in C# method names?
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Did such a pattern really require guidelines from Microsoft? Seems fairly basic stuff.
– Dave Lawrence
Jun 20 '13 at 14:08
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ActionBar text color
...his is the correct way. However, for consistency, you should be inheriting from Widget.Holo.Light.ActionBar for MyTheme.ActionBarStyle.
– Jake Wharton
Jun 21 '11 at 20:57
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