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Fastest way to determine if an integer's square root is an integer
...5,29,1417,805,719,1261,1177,1163,
1599,835,1367,315,1361,1933,1977,747,31,1373,1079,1637,1679,1581,1753,1355,
513,1539,1815,1531,1647,205,505,1109,33,1379,521,1627,1457,1901,1767,1547,
1471,1853,1833,1349,559,1523,967,1131,97,35,1975,795,497,1875,1191,1739,
641,1149,1385,133,529,845,1657,725,161,130...
.NET NewtonSoft JSON deserialize map to a different property name
...tings = new JsonSerializerSettings();
settings.DateFormatString = "YYYY-MM-DD";
settings.ContractResolver = new CustomContractResolver();
this.DataContext = JsonConvert.DeserializeObject<CountResponse>(jsonString, settings);
Logic:
public class CustomContractResolver : DefaultContractResolv...
What's the difference between passing by reference vs. passing by value?
...elevant (e.g. the language may also expose some implementation details -- addresses, pointers, dereferencing -- this is all irrelevant; if the net effect is this, it's pass-by-reference).
Now, in modern languages, variables tend to be of "reference types" (another concept invented later than "pa...
Rebasing a Git merge commit
...rigin/master # merge origin/master on top of our master
We may get some additional merge conflicts here, but that's would only be conflicts from files changed between 8101fe3 and f5a7ca8, but not includes already resolved conflicts from topic
History will looks like this (ignoring correct-history...
How to write a cron that will run a script every day at midnight?
...and 0 hours--and the *s mean every day of every month.)
Syntax:
mm hh dd mt wd command
mm minute 0-59
hh hour 0-23
dd day of month 1-31
mt month 1-12
wd day of week 0-7 (Sunday = 0 or 7)
command: what you want to run
all numeric values can be replaced by * which means all
...
Browsers' default CSS for HTML elements
...yles for HTML5 (W3C spec)
Sample, per the default W3C HTML4 spec:
html, address,
blockquote,
body, dd, div,
dl, dt, fieldset, form,
frame, frameset,
h1, h2, h3, h4,
h5, h6, noframes,
ol, p, ul, center,
dir, hr, menu, pre { display: block; unicode-bidi: embed }
li { display: list-ite...
How to paste yanked text into the Vim command line
.... :help quote_/, help i_CTRL-R
Corollary: Keep your search pattern but add an alternative: / Ctrl-R, / \|alternative.
You've selected two words in the middle of a line in visual mode, yanked them with y, they are in the unnamed register. Now you want to open a new line just below where you are, w...
REST API 404: Bad URI, or Missing Resource?
...
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Good or bad practice? Initializing objects in getter
...ing initialization code in the constructor means that you have to provide additional support for deserialization. This pattern avoids that special coding.
There are several problems with this argument:
Most objects never will be serialized. Adding some sort of support for it when it is not neede...