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What is Virtual DOM?
...rrent DOM look like the new one. Those operations are applied quickly in a batch.
Taken from here.
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Install parent POM without building Child modules
... It isolated maven module inheritance (dependencies, properties etc) from batch building (child modules).
– Danubian Sailor
Jun 4 '13 at 11:23
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How to listen for changes to a MongoDB collection?
I'm creating a sort of background job queue system with MongoDB as the data store. How can I "listen" for inserts to a MongoDB collection before spawning workers to process the job? Do I need to poll every few seconds to see if there are any changes from last time, or is there a way my script can wa...
What does .SD stand for in data.table in R
...h among character/factor/numeric are common. We can use .SD and .SDcols to batch-convert groups of such columns.
We notice that the following columns are stored as character in the Teams data set:
# see ?Teams for explanation; these are various IDs
# used to identify the multitude of teams from
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Why are variables “i” and “j” used for counters?
... Yes, FORTRAN originates these conventions.
– Jé Queue
Nov 10 '10 at 0:26
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I was taught I th...
Waiting on a list of Future
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To timeout waiting for a future to appear on the queue there is a poll(seconds) method on the CompletionService.
– dcernahoschi
Oct 13 '13 at 18:16
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How to edit incorrect commit message in Mercurial? [duplicate]
...d including the selected revision from Mercurial changesets into Mercurial Queue patches. Select the Patch you want to modify the message for, and it should automatically change the screen to the MQ editor. Edit the message which is in the middle of the screen, then click QRefresh. Finally, right cl...
Postgres: clear entire database before re-creating / re-populating from bash script
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Although the following line is taken from a windows batch script, the command should be quite similar:
psql -U username -h localhost -d postgres -c "DROP DATABASE \"$DATABASE\";"
This command is used to clear the whole database, by actually dropping it. The $DATABASE (in Wi...
Delete commits from a branch in Git
... Note: If you happen to have any --no-ff merges in that last batch of commits, rebase will butcher them :( This is mentioned under -p on this page. The problem is, if you replace -i with -p, you no longer get that pop up with the choices for "edit this commit, sqush that one", etc etc....
What is the difference between a database and a data warehouse?
...ources.
Data capture - Bulk write operations typically on a predetermined batch schedule.
Data normalization - Denormalized schemas, such as the Star schema or Snowflake schema.
Data storage - Optimized for simplicity of access and high-speed query. performance using columnar storage.
Data acces...