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Programmatically go back to the previous fragment in the backstack
Say I have an activity that has fragments added programmatically:
12 Answers
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SQL Server indexes - ascending or descending, what difference does it make?
...I'm using version 2005), you can specify that the index on each column be either ascending or descending. I'm having a hard time understanding why this choice is even here. Using binary sort techniques, wouldn't a lookup be just as fast either way? What difference does it make which order I choose?
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Java String to SHA1
...presentation using Base64. Apache Commons Codec API 1.4, has this nice utility to take away all the pain. refer here
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How to escape single quotes within single quoted strings
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' Start third quotation, using single quotes.
If you do not place any whitespaces between (1) and (2), or between (4) and (5), the shell will interpret that string as a one long word.
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How to execute PHP code from the command line?
...nt like if(function_exists("my_func")) echo 'function exists'; directly with the command line without having to use a seperate php file.
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How to replace all dots in a string using JavaScript
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You need to escape the . because it has the meaning of "an arbitrary character" in a regular expression.
mystring = mystring.replace(/\./g,' ')
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Flatten list of lists [duplicate]
I'm having a problem with square brackets in Python. I wrote a code that produces the following output:
4 Answers
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\d is less efficient than [0-9]
...0123456789] in a regular expression rather than [0-9] or \d . I said it was probably more efficient to use a range or digit specifier than a character set.
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How to merge dictionaries of dictionaries?
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this is actually quite tricky - particularly if you want a useful error message when things are inconsistent, while correctly accepting duplicate but consistent entries (something no other answer here does....)
assuming you don't have huge num...
Is it possible to declare git repository as dependency in android gradle?
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For me the best way is:
https://jitpack.io
Step 1. Add the JitPack repository to build.gradle at the end of repositories:
repositories {
// ...
maven { url "https://jitpack.io" }
}
Step 2. Add the dependency in the form
dependencies {
compil...