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Waiting until two async blocks are executed before starting another block
...rrently? I mean, assume that block1 and block2 are associated with a group now, will block2 wait until block1 is done before it can start executing?
– tom
Aug 10 '12 at 22:25
9
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Using reCAPTCHA on localhost
...
Update
The original answer is no longer correct. The developer's guide now states:
"If you would like to use "localhost" for development, you must add it to the list of domains."
This will only work if you access localhost using 127.0.0.1/... rather than localhost/....
The original answe...
How do I remove a property from a JavaScript object?
...d values. The delete operator is used to remove these keys, more commonly known as object properties, one at a time.
var obj = {
myProperty: 1
}
console.log(obj.hasOwnProperty('myProperty')) // true
delete obj.myProperty
console.log(obj.hasOwnProperty('myProperty')) // false
T...
Argument list too long error for rm, cp, mv commands
...r practice to use -exec to execute rm, rather than invoking xargs(which is now 3 processes and a pipe instead of a single process with -delete or 2 processes with -exec).
– scragar
May 20 '14 at 10:10
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What is the difference between the Data Mapper, Table Data Gateway (Gateway), Data Access Object (DA
...ulate the database logic for a specific entity so the calling code has no knowledge of the underlying persistence layer. From my brief research all of them typically implement your standard CRUD methods and abstract away the database-specific details.
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Why is i++ not atomic?
...
The first word of the question is "why". As of now, this is the only answer to address the issue of "why". The other answers really just re-state the question. So +1.
– Dawood ibn Kareem
Aug 7 '14 at 1:44
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What are copy elision and return value optimization?
...If you want to avoid possible copy elision, use -fno-elide-constructors.
Now almost all compilers provide copy elision when optimisation is enabled (and if no other option is set to disable it).
Conclusion
With each copy elision, one construction and one matching destruction of the copy are om...
What does axis in pandas mean?
...ified to reduce this confusion. I'd do it myself if I could, but for right now, I only know how to use them. I do understand which axis to use to get the data I want. However confusion remains as to why mean() and drop() feel like they affect opposing axes.
– matty
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Capturing Groups From a Grep RegEx
... use grep multiple times within a pipeline to first reduce your line to a known format, and then to extract just the bit you want. (Although tools like cut and sed are far better at this).
Suppose for the sake of argument that your pattern was a bit simpler: [0-9]+_([a-z]+)_ You could extract this ...
Fast and responsive interactive charts/graphs: SVG, Canvas, other?
...ickly started getting slow. But each new version got substantially faster. Now I am on FF 18 beta and it's fast compared to 17. Not sure whether it is as smooth as chrome though.
– user2503795
Dec 10 '12 at 1:03
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