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Tool to read and display Java .class versions
... class version to JDK version mappings up to Java 7:
Target Major.minor Hex
1.1 45.3 0x2D
1.2 46.0 0x2E
1.3 47.0 0x2F
1.4 48.0 0x30
5 (1.5) 49.0 0x31
6 (1.6) 50.0 0x32
7 (1.7) 51.0 0x33
8 (1.8) 52.0 0x34
9 53.0...
Converting an int to std::string
... use "%g" to convert float or double to string, use "%x" to convert int to hex representation, and so on.
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Making iTerm to translate 'meta-key' in the same way as in other OSes
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For backward-delete-word (⎇-DEL) send a hex code 0x17, for jumping to beginning of input (⌘-←) send 0x01 and for jumping to the end (⌘-→) send 0x05.
– Lenar Hoyt
May 1 '14 at 21:54
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How do I make a transparent border with CSS?
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And you can use this tool to convert from hex to rgba colour... hexcolortool.com ... where you can optionally specify the hex colour in the URL, like so... hexcolortool.com/#ffcc00
– clayRay
Aug 7 '17 at 1:31
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How to encrypt/decrypt data in php?
...the binary data into a textual representation using base64_encode() or bin2hex(), doing so requires between 33% to 100% more storage space.
Decryption
Decryption of the stored values is similar:
function pkcs7_unpad($data)
{
return substr($data, 0, -ord($data[strlen($data) - 1]));
}
$row = $...
Batch files: How to read a file?
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set /p "line="
echo(!line!
)
)
For reading it "binary" into a hex-representation
You could look at SO: converting a binary file to HEX representation using batch file
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Setting background colour of Android layout element
...="@color/red"
example didn't work for me, but the
android:background="#(hexidecimal here without these parenthesis)"
worked for me in the relative layout element as an attribute.
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Can I make 'git diff' only the line numbers AND changed file names?
...o "I don't know what to do, help!"; exit 1;;
esac
path=$1
old_file=$2
old_hex=$3
old_mode=$4
new_file=$5
new_hex=$6
new_mode=$7
printf '%s: ' $path
diff $old_file $new_file | grep -v '^[<>-]'
For details on "external diff" see the description of GIT_EXTERNAL_DIFF in the git manual page (ar...
How do you use a variable in a regular expression?
... @gravityboy You can do ('' + myNumber).replace(/10/g, 'a') or if you want hex numbers, you can do parseInt('' + myNumber, 16) to convert to hex from decimal.
– Eric Wendelin
Jun 21 '11 at 15:19
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写出高质量代码的10个Tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...解一些常用的设计原则即可，甚至你也可以只了解什么是低耦合，并在你的代码中坚持实践，也能写出很不错的代码。
2. 代码标准
代码标准在团队合作中尤为重要，谁也不希望一个项目中代码风格各异，看得让人糟心，即便...