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How can I access and process nested objects, arrays or JSON?
...a key -> value structure. Keys in an array must be numeric, whereas any string can be used as key in objects. The key-value pairs are also called the "properties".
Properties can be accessed either using dot notation
const value = obj.someProperty;
or bracket notation, if the property name wo...
Maven Install on Mac OS X
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Download Maven from its homepage
Follow the installation instructions:
Extract the distribution archive, i.e.apache-maven-3.3.9-bin.tar.gz to the directory you wish to install Maven 3.3.9. The subdirectory apache-maven-3.3.9 will be created from the archive.
Optional: Add the MAVEN_OPTS environm...
javac option to compile all java files under a given directory recursively
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Very simple method, does not rely on extra files
– linquize
Dec 27 '15 at 2:20
T...
Good reasons NOT to use a relational database?
...eters because business users can simply look at them and edit them without extra tools. Text files are great for write-once/read-almost-never applications like logging. To pick an approach you need to figure out what you're trying to accomplish
– O. Jones
Jul 1...
How do I get the value of text input field using JavaScript?
...s far as I can see, it just doesn't support CSS3 selectors in the selector string.
– Fabrício Matté
Jun 22 '13 at 4:02
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How do I grab an INI value within a shell script?
...\{} ) # convert text2function (2)
ini=( ${ini[*]/%\} \)/\}} ) # remove extra parenthesis
ini[0]="" # remove first element
ini[${#ini[*]} + 1]='}' # add the last brace
eval "$(echo "${ini[*]}")" # eval the result
}
cfg_writer ()
{
IFS=' '$'\n'
fun="$(declare -F)"
fun="...
Android emulator-5554 offline
...ch for ports in use starting with 565. Execute: netstat -a -n -o | Select-String ":565"
PS C:\Users\CJBS> netstat -a -n -o | Select-String ":565"
TCP 127.0.0.1:5653 127.0.0.1:5653 ESTABLISHED 5944
TCP 127.0.0.1:5657 127.0.0.1:5657 ESTABLISHED ...
How can I append a string to an existing field in MySQL?
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You need to use the CONCAT() function in MySQL for string concatenation:
UPDATE categories SET code = CONCAT(code, '_standard') WHERE id = 1;
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Excel RTD(Excel Real-Time Data)实时刷新数据技术 - C/C++ - 清泛网 - 专注C/C++及内核技术
...索。RTD 工作表函数使用以下语法：
"=RTD(ProgID, Server, String 1, String 2, ... String n)"
第一个变量 ProgID 表示Real-Time Data 服务器（RTD Server）的编程标识符 (ProgID)。Server 变量指示运行RTD Server的计算机的名称；如果RTD Server在本地运行...
Best architectural approaches for building iOS networking applications (REST clients)
...t for particular service classes, but if you ,for some reasons, don't want extra copies or you are sure that you always will use one particular instance (without customisations) of the APIClient - make it a singleton, but DON'T, please DON'T make service classes as singletons.
Then each view contr...