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Submit HTML form on self page
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I used <?php $_PHP_SELF ?> and got the error that action cannot be blank, i guess ill just leave it off
– Drewdin
Feb 18 '15 at 12:04
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What is the difference between typeof and instanceof and when should one be used vs. the other?
...ot work as expected and typeof works well ... developer.mozilla.org/En/Core_JavaScript_1.5_Reference/…
– farinspace
May 22 '09 at 19:37
55
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使用TokuMX配置Replica Set集群 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...e，可加参数指定ip、端口，默认本机27017）
config={
"_id" : "ReplSetName",
"members" : [
{"_id" : 0, "host" : "172.16.88.97:27017",priority:2},
{"_id" : 1, "host" : "172.16.88.97:27018",priority:1},
{"_id" : 2, "host" : "172.16.88.97:27019",arbit...
How to link to apps on the app store
... see Apple QA1633:
https://developer.apple.com/library/content/qa/qa1633/_index.html.
Edit (as of January 2015):
itunes.com/apps links should be updated to appstore.com/apps. See QA1633 above, which has been updated. A new QA1629 suggests these steps and code for launching the store from an app...
How to check if running in Cygwin, Mac or Linux?
... will tell you what environment you're running in:
pax> uname -a
CYGWIN_NT-5.1 IBM-L3F3936 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin
pax> uname -s
CYGWIN_NT-5.1
And, according to the very helpful schot (in the comments), uname -s gives Darwin for OSX and Linux for Linux, while my Cygw...
Pick a random element from an array
...array = ["Frodo", "sam", "wise", "gamgee"]
let randomIndex = Int(arc4random_uniform(UInt32(array.count)))
print(array[randomIndex])
The castings are ugly, but I believe they're required unless someone else has another way.
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Block Comments in a Shell Script
...le (and so is !, an exclamation mark on its own), but you could use SNURFLE_BURGERS or classical_end_marker or any other word that doesn't appear on a line on its own in the commented-out material. I'd be leary of experimenting with spaces etc, but the word might well work with them too.
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What does the Reflect object do in JavaScript?
...) will cause the this.bar() call to get rerouted to wrapper.
Avoid legacy __proto__
On some browsers, __proto__ is defined as a special property that gives access to an object's prototype. ES5 standardized a new method Object.getPrototypeOf(obj) to query the prototype. Reflect.getPrototypeOf(obj) ...
remove objects from array by object property
...d:'efg',name:'em'},
{id:'hij',name:'ge'}];
items.splice(_.indexOf(items, _.findWhere(items, { id : "abc"})), 1);
With ES5 or higher
(without lodash/underscore)
With ES5 onwards we have findIndex method on array, so its easy without lodash/underscore
items.splice(items.findIn...
How to select rows from a DataFrame based on column values?
...
To select rows whose column value equals a scalar, some_value, use ==:
df.loc[df['column_name'] == some_value]
To select rows whose column value is in an iterable, some_values, use isin:
df.loc[df['column_name'].isin(some_values)]
Combine multiple conditions with &:
d...