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Replace a character at a specific index in a string?
...o create a new string with the character replaced.
String myName = "domanokz";
String newName = myName.substring(0,4)+'x'+myName.substring(5);
Or you can use a StringBuilder:
StringBuilder myName = new StringBuilder("domanokz");
myName.setCharAt(4, 'x');
System.out.println(myName);
...
Get color value programmatically when it's a reference (theme)
..._color, typedValue, true);
@ColorInt int color = typedValue.data;
Also make sure to apply the theme to your Activity before calling this code. Either use:
android:theme="@style/Theme.BlueTheme"
in your manifest or call (before you call setContentView(int)):
setTheme(R.style.Theme_BlueTheme)
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How to open a file for both reading and writing?
...d reopening:
with open(filename, "r+") as f:
data = f.read()
f.seek(0)
f.write(output)
f.truncate()
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how can I see what ports mongo is listening on from mongo shell?
If I have a mongo instance running, how can I check what port numbers it is listening on from the shell? I thought that db.serverStatus() would do it but I don't see it. I see this
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An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode
I Installed DotNetOpenAuth SDK-3.4.5.10201.vsix and I can't get it working.
It works locally (when I run as localhost) but when i try to publish it ain't working.
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What's the purpose of the LEA instruction?
For me, it just seems like a funky MOV. What's its purpose and when should I use it?
16 Answers
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How to write a JSON file in C#?
...write the following data into a text file using JSON format in C#. The brackets are important for it to be valid JSON format.
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Find an element in DOM based on an attribute value
...ly. You can now reliably use querySelector and querySelectorAll, see Wojtek's answer for how to do this.
There's no need for a jQuery dependency now. If you're using jQuery, great...if you're not, you need not rely it on just for selecting elements by attributes anymore.
There's not a very s...
gem install: Failed to build gem native extension (can't find header files)
...n/mysql_config
For Debian, and other distributions using Debian style packaging the ruby development headers are installed by:
sudo apt-get install ruby-dev
For Ubuntu the ruby development headers are installed by:
sudo apt-get install ruby-all-dev
If you are using a earlier version of ruby...
How do you check in python whether a string contains only numbers?
How do you check whether a string contains only numbers?
10 Answers
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