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What's the difference between Ruby's dup and clone methods?
...48 (Rails cookie handling) then you can easily get an error when they unbeknownst to you they clone it and then attempt to modify the clone. duping your frozen value and passing that in allows you to at least guarantee that no one accidentally modifies your constant, without breaking Rack here.
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Exclude a directory from git diff
...o the specs are irrelevant for this procedure, and just create headaches. now I know i can do
7 Answers
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registerForRemoteNotificationTypes: is not supported in iOS 8.0 and later
...ferent versions of iOS. If your team is using both Xcode 5 (which doesn't know about any iOS 8 selectors) and Xcode 6, then you will need to use conditional compiling as follows:
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000
if ([application respondsToSelector:@selector(registerUserNotificationSe...
Use cases for the 'setdefault' dict method
...or them:
headers = parse_headers( msg ) # parse the message, get a dict
# now add all the optional headers
for headername, defaultvalue in optional_headers:
headers.setdefault( headername, defaultvalue )
share
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JavaScript blob filename without link
...actually mount the a tag to the body in order for this to work (tried just now in Chrome)
– beyond-code
Aug 12 '19 at 10:37
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show 13 more c...
Can PostgreSQL index array columns?
...tage from the original Berkeley design of Postgres and very hard to change now. And it's generally working just fine. Here is a thread on pgsql-bugs with Tom Lane commenting on this.
Some PostGis functions (like ST_DWithin()) seem to violate this principal, but that is not so. Those functions are r...
Objective-C : BOOL vs bool
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Got to know different behaviour take a look at below. NSInteger progressTime = 2;//any value NSInteger totalTime = 1;//any value BOOL success = (progressTime>=totalTime)//it is always gives NO But Once I received...
Detect If Browser Tab Has Focus
...le only one can have focus. Use whichever technique suits your needs, but know the difference.
– jaredjacobs
Sep 19 '18 at 16:47
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Form inside a table
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Seems "in development" now, and ok to use
– user1156544
Jun 19 '17 at 13:47
1
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node.js require all files in a folder?
...hing.js");
exports.others = require("./routes/others.js");
If you don't know the filenames you should write some kind of loader.
Working example of a loader:
var normalizedPath = require("path").join(__dirname, "routes");
require("fs").readdirSync(normalizedPath).forEach(function(file) {
requ...