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Regex to match only letters
How can I write a regex that matches only letters?
20 Answers
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Huawei, logcat not showing the log for my app?
OK, logcat is showing system logs but it is not showing application log on my Huawei Ascend. If I switch to another device such as my Galaxy Nexus or Nexus 7 then for the same app (same APK even) log is displayed.
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What could cause java.lang.reflect.InvocationTargetException?
...ll, I've tried to understand and read what could cause it but I just can't get it:
13 Answers
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subtract two times in python
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Try this:
from datetime import datetime, date
datetime.combine(date.today(), exit) - datetime.combine(date.today(), enter)
combine builds a datetime, that can be subtracted.
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Parsing JSON array into java.util.List with Gson
I have a JsonObject named "mapping" with the following content:
5 Answers
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What is the difference between
Can some one please describe the usage of the following characters which is used in ERB file:
7 Answers
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What is Type-safe?
...ompiling, and throw an error if you try to assign the wrong type to a variable.
Some simple examples:
// Fails, Trying to put an integer in a string
String one = 1;
// Also fails.
int foo = "bar";
This also applies to method arguments, since you are passing explicit types to them:
int AddTwoNum...
'is' versus try cast with null check
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Because there's only one cast. Compare this:
if (myObj.myProp is MyType) // cast #1
{
var myObjRef = (MyType)myObj.myProp; // needs to be cast a second time
// before using it as ...
How to upper case every first letter of word in a string? [duplicate]
...ing with .toUpperCase(). Is there an existing java helper which does the job?
16 Answers
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How to find the type of an object in Go?
How do I find the type of an object in Go? In Python, I just use typeof to fetch the type of object. Similarly in Go, is there a way to implement the same ?
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