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How to check if NSString begins with a certain character
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Another approach to do it..
May it help someone...
if ([[temp substringToIndex:4] isEqualToString:@"http"]) {
//starts with http
}
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Rails: fields_for with index?
...s there a method (or way to pull off similar functionality) to do a fields_for_with_index ?
9 Answers
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How do I replace NA values with zeros in an R dataframe?
...then assign it to the location/name on the left. In this case, we aren't really "doing" anything - just making zeroes. The left side is saying: look at the d object, inside the d object (the square brackets), find all the elements that return TRUE (is.na(d) returns a logical for each element). Once...
Error: Could not create the Java Virtual Machine Mac OSX Mavericks
I just installed the latest Java SDK 7-67 from Oracle on the Mac 10.9.4. I then ran the command java -v in Terminal and I get this message:
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How to hide 'Back' button on navigation bar on iPhone?
I added a navigation control to switch between views in my app. But some of the views shouldn't have 'Back' (the previous title) button. Any ideas about how to hide the back button?
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How to redirect output of an entire shell script within the script itself?
Is it possible to redirect all of the output of a Bourne shell script to somewhere, but with shell commands inside the script itself?
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Get hostname of current request in node.js Express
...y have several Network Cards and unless you specify it node will listen on all of them, so you don't know on which NIC the request came in, before it comes in.
Hostname is a DNS matter --
Don't forget that several DNS aliases can point to the same machine.
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How to generate random number with the specific length in python
... use an arbitrary number of digits:
from random import randint
def random_with_N_digits(n):
range_start = 10**(n-1)
range_end = (10**n)-1
return randint(range_start, range_end)
print random_with_N_digits(2)
print random_with_N_digits(3)
print random_with_N_digits(4)
Output:
33
124
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Why does Typescript use the keyword “export” to make classes and interfaces public?
...m to the module. In your example: here.SomeClass = SomeClass;.
So conceptually, visibility as controlled by public and private is just for tooling, whereas the export keyword changes the output.
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When using Spring Security, what is the proper way to obtain current username (i.e. SecurityContext)
... {
SecurityContextHolder.setContext(securityContext);
}
}
And, finally, the production Spring config looks like this:
<bean id="myController" class="com.foo.FooController">
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<constructor-arg index="1">
<bean class="com.foo.SecurityContextHolderFacade">
<...