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Javascript object Vs JSON
...your IDE for better understanding and comment the
line containing invalid_javascript_object_no_quotes object declaration to avoid compile time error.
// Valid JSON strings(Observe quotes)
valid_json = '{"key":"value"}'
valid_json_2 = '{"key 1":"value 1"}' // Observe the space(special character) i...
scp (secure copy) to ec2 instance without password
...ermission Denied" error! How can I solve this?
– AleX_
Jan 18 '19 at 22:27
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Why do we need to install gulp globally and locally?
...t; 5.2
When used in a script field of your package.json, npm searches node_modules for the tool as well as globally installed modules, so the local install is sufficient.
So, if you are happy with (in your package.json):
"devDependencies": {
"gulp": "3.5.2"
}
"scripts": {
"test": "gulp te...
Set a path variable with spaces in the path in a Windows .cmd file or batch file
...
Try something like this:
SET MY_PATH=C:\Folder with a space
"%MY_PATH%\MyProgram.exe" /switch1 /switch2
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H2 in-memory database. Table not found
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DB_CLOSE_DELAY=-1
hbm2ddl closes the connection after creating the table, so h2 discards it.
If you have your connection-url configured like this
jdbc:h2:mem:test
the content of the database is lost at the moment the last conn...
MongoDB: How to update multiple documents with a single command?
...he flag multi to true like this :
db.Collection.update(
{_id_receiver: id_receiver},
{$set: {is_showed: true}},
{multi: true} /* --> multiple update */
, function (err, updated) {...});
i hope that helps :)
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How can I represent an infinite number in Python?
...t infinity is defined in the norm IEEE 754-1985 (en.wikipedia.org/wiki/IEEE_754-1985), which Any modern language will rely on. Another point is that, according to this norm, infinity must (obviously) be a floating-point number. This might explain why Python have chosen this akward syntax.
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How can I remove all objects but one from the workspace in R?
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require(gdata)
keep(object_1,...,object_n,sure=TRUE)
ls()
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Getting raw SQL query string from PDO prepared statements
...= 1
You can also get what you want if you set the PDO attribute PDO::ATTR_EMULATE_PREPARES. In this mode, PDO interpolate parameters into the SQL query and sends the whole query when you execute(). This is not a true prepared query. You will circumvent the benefits of prepared queries by interp...
Is PowerShell ready to replace my Cygwin shell on Windows? [closed]
...would be: sed 's/pattern/replacement/' file, which is roughly gc file | %{$_ -replace 'pattern','replacement'}, and similarly for awk: awk 'BEGIN {} /pat1/ {action1} /pat2/ {action2} END {}' file is roughly {BEGIN {}; switch -r -c -file file { 'pat1' {action1} 'pat2' {action2}}; END{};}
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