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What is the proper way to check for existence of variable in an EJS template (using ExpressJS)?
On the EJS github page, there is one and only one simple example:
https://github.com/visionmedia/ejs
13 Answers
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How to dynamically insert a tag via jQuery after page load?
...ng problems getting this to work. I first tried setting my script tags as strings and then using jquery replaceWith() to add them to the document after page load:
...
Explanation of JSONB introduced by PostgreSQL
... spec).
F.ex. these are valid JSON representations: null, true, [1,false,"string",{"foo":"bar"}], {"foo":"bar","baz":[null]} - hstore is just a little subset compared to what JSON is capable (but if you only need this subset, it's fine).
The only difference between json & jsonb is their storag...
How do I check in SQLite whether a table exists?
... Cursor, rawQuery with parameters.
boolean tableExists(SQLiteDatabase db, String tableName)
{
if (tableName == null || db == null || !db.isOpen())
{
return false;
}
Cursor cursor = db.rawQuery("SELECT COUNT(*) FROM sqlite_master WHERE type = ? AND name = ?", new String[] {"t...
What is the difference between declarative and imperative programming? [closed]
...eclarative programming is to invent new domain specific languages (DSL):
String Search: Regular Expression instead of custom imperative code
React.js: JSX instead of direct DOM manipulation
AWS CloudFormation: YAML instead of CLI
Relational Database: SQL instead of older read–write APIs such as ...
What is the difference between “instantiated” and “initialized”?
...are value types. In contrast, any class you create is a reference type. C# strings are also a reference type. Most things in the .NET framework are reference types.
Parts of a Variable
There is the variable name and it's value. Two parts.
The variable's name is what you declare it to be. The valu...
Precise Financial Calculation in JavaScript. What Are the Gotchas?
...blem here is that e.g. Money(0.1)means that the JavaScript lexer reads the string "0.1" from the source and then converts it to a binary floating point and then you already did an unintended rounding. The problem is about representation (binary vs decimal) not about precision.
–...
Memcache Vs. Memcached [duplicate]
...c difference while storing value. Memcache mostly considers every value as string whereas Memcached stores it value's original type. Thumbs up for your answer !
– NullPointer
Jun 17 '15 at 2:38
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Displaying files (e.g. images) stored in Google Drive on a website
...
A workaround is to get the fileId with Google Drive SDK API and then using this Url:
https://drive.google.com/uc?export=view&id={fileId}
That will be a permanent link to your file in Google Drive (image or anything else).
Note: this link seems to be subject to quotas. So not ...
MySQL: @variable vs. variable. What's the difference?
... a procedure variable is reinitialized to NULL each time the procedure is called, while the session-specific variable is not:
CREATE PROCEDURE prc_test ()
BEGIN
DECLARE var2 INT DEFAULT 1;
SET var2 = var2 + 1;
SET @var2 = @var2 + 1;
SELECT var2, @var2;
END;
SET @var2 = 1;
CALL prc...