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Get the first key name of a javascript object [duplicate]
..." key in a hash (Javascript calls them objects). They are fundamentally unordered. Do you mean just choose any single key:
for (var k in ahash) {
break
}
// k is a key in ahash.
share
|
imp...
Exception thrown in NSOrderedSet generated accessors
... implementation of the add object setter to append correctly to a NSMutableOrderedSet.
- (void)addSubitemsObject:(SubItem *)value {
NSMutableOrderedSet* tempSet = [NSMutableOrderedSet orderedSetWithOrderedSet:self.subitems];
[tempSet addObject:value];
self.subitems = tempSet;
}
Reassi...
Is C++14 adding new keywords to C++?
...le because no existing code could use auto as an identifier anyway.
So in order to accept a new keyword there needs to be a justification that outweighs the cost of a potential clash with existing code and no sensible way to implement the same thing without a new keyword. In the case of C++11, the ...
How to have no pagebreak after \include in LaTeX
... by Will Robertson is rather useful to avoid the clearpage. It appears, in order for \includeonly to work one has to call the package immediately after \documentclass{...}. In the complex environment of my dissertation I also ran into problems with broken references.
A good workaround, when include...
Git cherry pick vs rebase
...nto it.
Tries to apply each of the saved commits (as if with git apply) in order. In our toy example it's just one commit, C3. Let's say its application will produce a commit C3'.
If all went well, the "experiment" reference is updated to point to the commit resulted from applying the last saved com...
Can you have if-then-else logic in SQL? [duplicate]
... in dbs it is not optimal because this syntax is procedural - it would be orders of magnitude slower than a proper set based query.
– mson
Feb 28 '13 at 13:42
...
Performance of Arrays vs. Lists
...ing the Capacity of the list to the number of items it will hold.
But, in order to figure out if iterating over a List is as fast as iterating over an array, why don't you benchmark it ?
int numberOfElements = 6000000;
List<int> theList = new List<int> (numberOfElements);
int[] theAr...
How to amend older Git commit? [duplicate]
...on of jgroups.xml
now to combine e23d23a with 8c83e24 you can change line order and use squash like this:
pick 8c83e24 use substitution instead of separate subsystems file to avoid jgroups.xml and jgroups-e2.xml going out of sync
squash e23d23a fix indentation of jgroups.xml
pick 799ce28 gene...
What does Redis do when it runs out of memory?
...TL algorithms are not precise algorithms but approximated
# algorithms (in order to save memory), so you can tune it for speed or
# accuracy. For default Redis will check five keys and pick the one that was
# used less recently, you can change the sample size using the following
# configuration dire...
How to see log files in MySQL?
...yslog).
To Enable them just follow below steps:
step1: Go to this file (/etc/mysql/conf.d/mysqld_safe_syslog.cnf) and remove or comment those line.
step2: Go to mysql conf file (/etc/mysql/my.cnf) and add following lines
To enable error log add following
[mysqld_safe]
log_error=/var/log/mysql/...