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How do I check that a number is float or integer?
...viding by 1:
function isInt(n) {
return n % 1 === 0;
}
If you don't know that the argument is a number you need two tests:
function isInt(n){
return Number(n) === n && n % 1 === 0;
}
function isFloat(n){
return Number(n) === n && n % 1 !== 0;
}
Update 2019
5 years a...
Named placeholders in string formatting
... the position in the list of args, which makes it a renaming problem. You know the name of the keys, which means you can decide a position for a key in the list of arguments. from now on value will be known as 0 and column as 1: MessageeFormat.format("There's an incorrect value \"{0}\" in ...
How to go to a specific element on page? [duplicate]
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@Lior: Honestly, I do that now because I've always done it that way; I think the original reason for 'html,body' is to deal with browser differences.
– mu is too short
Oct 10 '13 at 18:30
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PHP json_decode() returns NULL with valid JSON?
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Nah, this should work. I can't do more testing right now, if I get to it later I'll post here. There are also a few hints in the user contributed notes: de.php.net/json_decode maybe something helps.
– Pekka
Mar 9 '10 at 16:09
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In Android, how do I set margins in dp programmatically?
...arams. If you use relative layout, import LinearLayout.LayoutParams , etc.
Now, if you set the margin using Layout_marginLeft, Right, etc, you need to update margin in this way
layoutParams.setMargins(left, top, right, bottom);
If you set margin using the new layout_marginStart, you need to update ...
How to make PowerShell tab completion work like Bash
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It is now possible to get PowerShell to do Bash-style completion, using PSReadline.
Check out blog post Bash-like tab completion in PowerShell.
share
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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... local id = 0;
local ttl = 100;
local now = ngx.time();
local config = ngx.shared.config;
if not config:get("id") then
config:set("id", "0");
end
while id >= tonumber(config:get("id")) do
...
How to add local .jar file dependency to build.gradle file?
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@Gubatron it's documented now: gradle.org/docs/current/userguide/…
– David Moles
Jan 12 '15 at 22:23
7
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iOS - Calling App Delegate method from ViewController
...egate ((MyAppDelegateClass *)[UIApplication sharedApplication].delegate) Now whichever class imports app delegate can directly use [AppDelegate.viewController someMethod]
– harveyslash
Jul 13 '16 at 7:16
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Android on-screen keyboard auto popping up
...y seems to be hiding the keyboard just fine. I've made a register activity now too but the keyboard is popping up by default. So how is the login one avoiding this? I can't find the setSoftInputMode in the login activity, or the windowSoftInputMode attribute in the activity.xml.
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