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What are “res” and “req” parameters in Express functions?
...le:
app.get('/people.json', function(request, response) {
// We want to set the content-type header so that the browser understands
// the content of the response.
response.contentType('application/json');
// Normally, the data is fetched from a database, but we can cheat:
var people = ...
How to determine whether a Pandas Column contains a particular value
...was not in the column 43 in df['id'] it still returned True . When I subset to a data frame only containing entries matching the missing id df[df['id'] == 43] there are, obviously, no entries in it. How to I determine if a column in a Pandas data frame contains a particular value and why doesn'...
PostgreSQL naming conventions
...(identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers case insensitively when not quoted (it actually folds them to lowercase inter...
Using multiple property files (via PropertyPlaceholderConfigurer) in multiple projects/modules
...unresolvable="true". If you have multiple files that each contain partial sets of properties, and each file may or may not exist, you will need to use both.
– datguy
Mar 5 '14 at 18:27
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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
... interesting side effect.... rolling back the migration will set the field to the opposite (false -> true). So if you create the migration for several fields to add a null constraint, and some fields ALREADY had a null constraint, then rollback the migration, it will REMOVE the null...
T-SQL: Selecting rows to delete via joins
... From rejected pending edit: "The UniqueRecords property has to be set to yes, otherwise it won't work. (support.microsoft.com/kb/240098)"
– StuperUser
Jan 3 '14 at 15:58
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SQL query to get all values a enum can have
...your_enum))::text AS your_column
This will return a single column result set of the contents of the enum "your_enum" with a column named "your_column" of type text.
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POST request send json data java HttpUrlConnection
...coding problems, you should specify the encoding, if it is not UTF-8:
con.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
con.setRequestProperty("Accept", "application/json");
// ...
OutputStream os = con.getOutputStream();
os.write(parent.toString().getBytes("UTF-8"));
os....
How to parameterize @Scheduled(fixedDelay) with Spring 3.0 expression language?
...ng the Spring 3.0 capability to annotate a scheduled task, I would like to set the fixedDelay as parameter from my configuration file, instead of hard-wiring it into my task class, like currently...
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What is the __DynamicallyInvokable attribute for?
...
Yeah, the code found by @Hans sets up the flags looked for by RuntimeAssembly.InvocableAttributeCtorToken, which is called by the IsNonW8PFrameworkAPI() methods you mention.
– Mark Hurd
Aug 8 '16 at 14:56
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