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Android: Go back to previous activity
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I am having the user go by many activities one after the other through intents. Do I need to do anything in order to make sure the app doesn't crash with too many activities on the stack? Thanks!
– Ruchir Baronia
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Replace a character at a specific index in a string?
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Turn the String into a char[], replace the letter by index, then convert the array back into a String.
String myName = "domanokz";
char[] myNameChars = myName.toCharArray();
myNameChars[4] = 'x';
myName = String.valueOf(myNameChars);
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What are the most common SQL anti-patterns? [closed]
... and doing so efficiently, involves a tedious process partly characterized by learning unfamiliar paradigms, and finding out that some of our most familiar programming patterns don't work here. What are the common antipatterns you've seen (or yourself committed)?
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I don't remember my android debug.keystore password
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For Mac OS User: ~/.android/debug.keystore
After you will get SHAH1 by below command using Command Prompt:
keytool -list -v -keystore "C:\Users\username.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android
Note :above answer has just information of android st...
Cancellation token in Task constructor: why?
...Completion status. If the body throws an OperationCancelledException, e.g. by ThrowIfCancellationRequested, then Task will check whether that Exception's CancellationToken is the same as the one associated with the Task. If it is, the task is Canceled. If not, it's Faulted.
– W...
Why does typeof NaN return 'number'?
... Why does Infinity === Infinity return true if an Infinity can be produced by different values: 1.0 / 0.0 or 2.0 / 0.0?
– Hashem Qolami
May 22 '16 at 9:15
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__init__ for unittest.TestCase
...tell because the self.tempdir that's supposed to exist, cannot be accessed by the other methods of the class. I get a AttributeError: 'TestingClass' object has no attribute 'tempdir'
– ffledgling
Jun 27 '13 at 21:27
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ConcurrentHashMap vs Synchronized HashMap
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We can achieve thread safety by using both ConcurrentHashMap and synchronisedHashmap. But there is a lot of difference if you look at their architecture.
synchronisedHashmap
It will maintain the lock at the object level. So if you want to perform ...
How to increase the vertical split window size in Vim
...ter changes:
- + instead of < >
Examples:
Decrease horizontal size by 10 columns
:10winc -
Increase horizontal size by 30 columns
:30winc +
or within normal mode:
Horizontal splits
10 CTRL+w -
30 CTRL+w +
Vertical splits
10 CTRL+w < (decrease)
30 CTRL+w > (increase)
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How to maintain aspect ratio using HTML IMG tag
... resolution (e.g. 256x256, 1024x768, 500x400, 205x246, etc.) as 64x64. But by setting the height and width attributes of an img tag to 64, it's not maintaining the aspect ratio, so the image looks distorted.
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