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How do you share constants in NodeJS modules?
...o false and using Object.freeze have a massive performance penalty in v8 - https://bugs.chromium.org/p/v8/issues/detail?id=1858 and http://jsperf.com/performance-frozen-object
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SQL select join: is it possible to prefix all columns as 'prefix.*'?
...e with PRAGMA full_column_names and PRAGMA short_column_names. See http://www.sqlite.org/pragma.html
Otherwise all I can recommend is to fetch columns in a result set by ordinal position rather than by column name, if it's too much trouble for you to type the names of the columns in your query.
T...
JavaScript: How to pass object by value?
...
Check out this answer https://stackoverflow.com/a/5344074/746491 .
In short, JSON.parse(JSON.stringify(obj)) is a fast way to copy your objects, if your objects can be serialized to json.
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Alternate output format for psql
...ormatting, horizontal scrolling, search and many more features.
git clone https://github.com/okbob/pspg.git
cd pspg
./configure
make
make install
then make sure to update PAGER variable e.g. in your ~/.bashrc
export PAGER="pspg -s 6"
where -s stands for color scheme (1-14). If you're using pg...
LINQ to Entities case sensitive comparison
...ed == false) System.Diagnostics.Debugger.Launch();
// https://github.com/mono/entityframework/blob/master/src/EntityFramework.SqlServer/SqlServerMigrationSqlGenerator.cs
var columnSQL = BuildColumnType(alterColumnOperation.Column); //[nvarchar](100)
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When should we use mutex and when should we use semaphore
...ask 2 - Consumer */
sema_wait(&sem); // Wait for signal
See http://www.netrino.com/node/202 for further explanations
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How does OAuth 2 protect against things like replay attacks using the Security Token?
...ally passwords, and the whole thing is secured only by the security of the https connection.
OAuth 2 has no protection against replay attacks of the Security Token or the Secret. Instead, it relies entirely on Site B being responsible with these items and not letting them get out, and on them being...
How do I put two increment statements in a C++ 'for' loop?
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Try not to do it!
From http://www.research.att.com/~bs/JSF-AV-rules.pdf:
AV Rule 199
The increment expression in a for loop will perform no action other than to change a single
loop parameter to the next value for the loop.
Rationale: Reada...
Copy array by value
...ng) only; where the Spread operator [...myArray] has the best performance (https://measurethat.net/Benchmarks/Show/4281/0/spread-array-performance-vs-slice-splice-concat).
Array of literal-values (type1) and literal-structures (type2)
The JSON.parse(JSON.stringify(myArray)) technique can be used to ...
UICollectionView Set number of columns
...ditionally, here are 2 really good tutorials on UICollectionViews:
http://www.raywenderlich.com/22324/beginning-uicollectionview-in-ios-6-part-12
http://skeuo.com/uicollectionview-custom-layout-tutorial
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