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Get names of all keys in the collection
...e context show what is usefull: if data is normalized (ex. origen from CSV file), it is useful... For data imported from SQL is useful.
– Peter Krauss
Sep 22 '15 at 10:17
5
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How to make an Android Spinner with initial text “Select One”?
... @DavidDoria You have to use the NoDefaultSpinner class in your layout file. Copy the source from above into your project, e.g. into package com.example.customviews. Now in your layout xml, instead of <Spinner ...> use <com.example.customviews.NoDefaultSpinner ...> The rest of the co...
Differences between utf8 and latin1
...isn't an encoding. It's usually an option that you can give when reading a file, telling the IO functions to not apply any encoding, but instead just read the file byte by byte.
– sepp2k
May 17 '17 at 11:38
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How to remove newlines from beginning and end of a string?
...000C FORM FEED.
It is '\r', U+000D CARRIAGE RETURN.
It is '\u001C', U+001C FILE SEPARATOR.
It is '\u001D', U+001D GROUP SEPARATOR.
It is '\u001E', U+001E RECORD SEPARATOR.
It is '\u001F', U+0
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CSS table-cell equal width
... To expand on this, this works for simple layouts (1x1, 2x2, 3x3, etc) but complex layouts (1x3x1, 1x2x3x4, etc) require additional divs with display:table to be used as if they were rows, not display:tabl-row as some might expect. Example here.
– filoxo
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The case against checked exceptions
...stitute for a good checked exception.
For me, the classic example is the file-open API. Every programming language in the history of languages (on file systems at least) has an API somewhere that lets you open a file. And every client programmer using this API knows that they have to deal with the...
html onchange event not working
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'onkeypres', 'onkeyup', etc. is not a solution when one wants to call a function only if the text has changed! Key events produce an unnecessary traffic in this case. (Very strange that this reply has been chosen as a solution, esp. with so meny vo...
What is RSS and VSZ in Linux memory management
...include heap space that is allocated and not used as well as memory mapped files.
– jmh
Jun 28 '17 at 16:38
Great. Jus...
How can I create directory tree in C++/Linux?
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With C++17 or later, there's the standard header <filesystem> with
function
std::filesystem::create_directories
which should be used in modern C++ programs.
The C++ standard functions do not have the POSIX-specific explicit
permissions (mode) argument, though.
However, h...
python multithreading wait till all threads finished
...ng something, wont this first run t1, wait till its finish, then go to t2..etc,etc ? how do make it all happen at once? i dont see how this would run them at the same time?
– Inbar Rose
Aug 15 '12 at 12:01
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